import files
This commit is contained in:
Yann Autissier
Executable
+105
@@ -0,0 +1,105 @@
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#!/bin/bash
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### BEGIN INIT INFO
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# Provides: zram
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# Required-Start:
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# Required-Stop:
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Increased Performance In Linux With zRam (Virtual Swap Compressed in RAM)
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# Description: Adapted from systemd scripts at https://github.com/mystilleef/FedoraZram
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### END INIT INFO
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# percent of RAM assigned to zRam swap devices
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RATIO=33
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# priority of zRam swap devices
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PRIORITY=1024
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# load system specific configurations
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[ -r /etc/default/zram ] && . /etc/default/zram
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[ -r /etc/sysconfig/zram ] && . /etc/sysconfig/zram
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start() {
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# get number of CPUs
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num_cpus=$(grep -c ^processor /proc/cpuinfo 2>/dev/null)
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# if something goes wrong, assume we have 1
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[ $? -eq 0 ] && [ "${num_cpus:-0}" != 0 ] || num_cpus=1
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# load kernel module
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if /sbin/modinfo zram 2>/dev/null | grep -q ' zram_num_devices:' 2>/dev/null; then
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/sbin/modprobe zram zram_num_devices=$num_cpus
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elif /sbin/modinfo zram 2>/dev/null | grep -q ' num_devices:' 2>/dev/null; then
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/sbin/modprobe zram num_devices=$num_cpus
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else
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/bin/echo "Unable to load zram kernel module." && exit 1
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fi
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# get amount of memory
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mem_total_kb=$(awk '$1 == "MemTotal:" {print $2}' /proc/meminfo)
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# assign RATIO% of system memory to zram
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mem_total_zram=$((mem_total_kb * ${RATIO:-33} / 100 * 1024))
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# create one zram swap device per cpu
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for i in $(seq 0 $((num_cpus - 1))); do
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# enable lz4 if supported
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/bin/grep -q lz4 /sys/block/zram$i/comp_algorithm 2>/dev/null && /bin/echo lz4 > /sys/block/zram$i/comp_algorithm 2>/dev/null
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# initialize the device
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/bin/echo $((mem_total_zram / num_cpus)) > /sys/block/zram$i/disksize 2>/dev/null
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# create a swap filesystem
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/sbin/mkswap /dev/zram$i >/dev/null 2>&1
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# activate zram swap device
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/bin/echo -n "Adding swap device /dev/zram$i... "
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/sbin/swapon -p ${PRIORITY:-1024} /dev/zram$i >/dev/null 2>&1
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result=$? && [ ${result} -eq 0 ] && /bin/echo "OK" || /bin/echo "ERROR"
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done
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[ ${result:-0} -ge ${return:-0} ] && return=${result}
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}
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stop() {
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# remove swap devices
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for dev in $(awk '$1 ~ /^\/dev\/zram/ {print $1}' /proc/swaps); do
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/bin/echo -n "Removing swap device $dev... "
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/sbin/swapoff $dev >/dev/null 2>&1
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result=$? && [ ${result} -eq 0 ] && /bin/echo "OK" || /bin/echo "ERROR"
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done
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[ ${result:-0} -ge ${return:-0} ] && return=${result}
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# remove zram kernel module
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if grep -q "^zram " /proc/modules; then
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sleep 1
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/sbin/rmmod zram
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fi
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}
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status() {
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for block in /sys/block/zram*; do
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[ -d "$block" ] && /bin/echo -n "/dev/${block/*\/}: " || continue
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[ $(<$block/compr_data_size) -gt 0 ] \
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&& compr_ratio=$(awk "BEGIN { printf \"%.2f\", "$(<$block/orig_data_size)/$(<$block/compr_data_size)" }") \
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|| compr_ratio=0
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[ -r $block/stat ] && [ -r $block/mm_stat ] \
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&& /usr/bin/awk 'NF==11 {printf("read: %8d, write: %8d, wait: %8d", $1, $5, $11)}' $block/stat && /bin/echo -n ", " \
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&& /usr/bin/awk 'NF==7 {printf("orig_data_size: %12d, compr_data_size: %12d", $1, $2)}' $block/mm_stat && /bin/echo -n ", " \
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&& /bin/echo "compr_ratio: $compr_ratio" \
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|| /bin/echo "read: $(<$block/num_reads), write: $(<$block/num_writes), orig_data_size: $(<$block/orig_data_size), compr_data_size: $(<$block/compr_data_size), compr_ratio: $compr_ratio"
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done
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}
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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restart)
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stop
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start
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;;
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status)
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status
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;;
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*)
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/bin/echo "Usage: $0 {start|stop|restart|status}"
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esac
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exit ${return:-1}
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+18
@@ -0,0 +1,18 @@
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#!/sbin/openrc-run
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depend() {
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need localmount swap
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after bootmisc modules
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}
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start() {
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/etc/init.d/zram start
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}
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stop() {
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/etc/init.d/zram stop
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}
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status() {
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/etc/init.d/zram status
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}
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@@ -0,0 +1,6 @@
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UNAUTHORIZED ACCESS TO THIS DEVICE IS PROHIBITED
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You must have explicit, authorized permission to access or configure this device.
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Unauthorized attempts and actions to access or use this system may result in civil and/or criminal penalties.
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All activities performed on this device are logged and monitored.
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@@ -0,0 +1,2 @@
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#!/bin/sh
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cd /root && ( make ansible-pull > /var/log/ansible.log || reboot ) &
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@@ -0,0 +1,39 @@
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# shellcheck shell=sh
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# test current shell flags
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case $- in
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# if we are in an interactive shell
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*i*)
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# load user stuff from files ~/.rc.d/*
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for file in "${HOME}"/.rc.d/*; do
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# read files only
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if [ -f "${file}" ]; then
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func_name=$(basename "${file}")
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func_args=$(cat "${file}")
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# at this stage, func_name can start with numbers to allow ordering function calls with file names starting with numbers
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# func_name must start with a letter, remove all other characters at the beginning of func_name until a letter is found
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while [ "${func_name}" != "" ] && [ "${func_name#[a-z]}" = "${func_name}" ]; do
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# remove first char of func_name
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func_name="${func_name#?}"
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done
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# call user function with args passed from the content of the file
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command -v "${func_name}" >/dev/null 2>&1 && "${func_name}" "${func_args}"
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fi
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done
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# load user stuff from env vars RC_*
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IFS="$(printf '%b_' '\n')"; IFS="${IFS%_}"; for line in $(printenv 2>/dev/null |awk '$0 ~ /^RC_[1-9A-Z_]*=/'); do
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func_name=$(printf '%s\n' "${line%%=*}" |awk '{print tolower(substr($0,4))}')
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eval func_args=\$"${line%%=*}"
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[ "${func_args}" = "false" ] && continue
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[ "${func_args}" = "true" ] && unset func_args
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# at this stage, func_name can start with numbers to allow ordering function calls with file names starting with numbers
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# func_name must start with a letter, remove all other characters at the beginning of func_name until a letter is found
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while [ "${func_name}" != "" ] && [ "${func_name#[a-z]}" = "${func_name}" ]; do
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# remove first char of func_name
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func_name="${func_name#?}"
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done
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# call user function with args passed from the value of the env var
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command -v "${func_name}" >/dev/null 2>&1 && "${func_name}" "${func_args}"
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done
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unset IFS
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;;
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esac
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@@ -0,0 +1,218 @@
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# shellcheck shell=sh
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## force() runs a command sine die
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force() {
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if [ $# -gt 0 ]; then
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while true; do
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"$@"
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sleep 1
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done
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fi
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}
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## force8() runs a command sine die if not already running
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force8() {
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if [ $# -gt 0 ]; then
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while true; do
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# awk expression to match $@
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[ "$(ps wwx -o args 2>/dev/null |awk -v field="${PS_X_FIELD:-1}" '
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BEGIN {nargs=split("'"$*"'",args)}
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# if match first field
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$field == args[1] {
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matched=1;
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# match following fields
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for (i=1;i<=NF-field;i++) {
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if ($(i+field) == args[i+1]) {matched++}
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}
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# all fields matched
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if (matched == nargs) {found++}
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}
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END {print found+0}'
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)" = 0 ] && "$@"
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sleep 1
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done
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fi
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}
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## load_average() prints the current load average
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load_average() {
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awk '{printf "%.1f\n" $1}' /proc/loadavg 2>/dev/null \
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|| uptime 2>/dev/null |awk '{printf "%.1f\n", $(NF-2)}'
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}
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## process_count() prints number of "processes"/"running processes"/"D-state"
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process_count() {
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ps ax -o stat 2>/dev/null |awk '
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$1 ~ /R/ {process_running++};
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$1 ~ /D/ {process_dstate++};
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END {
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print NR-1"/"process_running+0"/"process_dstate+0;
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}'
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}
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## prompt_set() exports custom PROMPT_COMMAND
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prompt_set() {
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case "${TERM}" in
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screen*)
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ESCAPE_CODE_DCS="\033k"
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ESCAPE_CODE_ST="\033\\"
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;;
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linux*|xterm*|rxvt*)
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ESCAPE_CODE_DCS="\033]0;"
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ESCAPE_CODE_ST="\007"
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;;
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*)
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;;
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esac
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# in a screen
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if [ -n "${STY}" ]; then
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export PROMPT_COMMAND='printf "${ESCAPE_CODE_DCS:-\033]0;}%s${ESCAPE_CODE_ST:-\007}" "${PWD##*/}"'
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else
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export PROMPT_COMMAND='printf "${ESCAPE_CODE_DCS:-\033]0;}%s@%s:%s${ESCAPE_CODE_ST:-\007}" "${USER}" "${HOSTNAME%%.*}" "${PWD##*/}"'
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fi
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unset ESCAPE_CODE_DCS ESCAPE_CODE_ST
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}
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## ps1_set() exports custom PS1
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ps1_set() {
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case "$0" in
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*sh)
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COLOR_DGRAY="\[\033[1;30m\]"
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COLOR_RED="\[\033[01;31m\]"
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COLOR_GREEN="\[\033[01;32m\]"
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COLOR_BROWN="\[\033[0;33m\]"
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COLOR_YELLOW="\[\033[01;33m\]"
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COLOR_BLUE="\[\033[01;34m\]"
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COLOR_CYAN="\[\033[0;36m\]"
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COLOR_GRAY="\[\033[0;37m\]"
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COLOR_NC="\[\033[0m\]"
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;;
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*)
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;;
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esac
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PS1_COUNT="${COLOR_DGRAY}[${COLOR_BLUE}\$(process_count 2>/dev/null)${COLOR_DGRAY}|${COLOR_BLUE}\$(user_count 2>/dev/null)${COLOR_DGRAY}|${COLOR_BLUE}\$(load_average 2>/dev/null)${COLOR_DGRAY}]${COLOR_NC}"
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PS1_END="${COLOR_DGRAY}\$(if [ \"\$(id -u)\" = 0 ]; then printf \"#\"; else printf \"\$\"; fi)${COLOR_NC}"
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if type __git_ps1 >/dev/null 2>&1; then
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PS1_GIT="\$(__git_ps1 2>/dev/null \" (%s)\")"
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else
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PS1_GIT="\$(BRANCH=\$(git rev-parse --abbrev-ref HEAD 2>/dev/null); [ -n \"\${BRANCH}\" ] && printf \" (\${BRANCH})\")"
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fi
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PS1_GIT="${COLOR_CYAN}${PS1_GIT}${COLOR_NC}"
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PS1_HOSTNAME_COLOR="\`case \"\${ENV}\" in [Pp][Rr][0Oo][Dd]*) printf \"${COLOR_RED}\";; *) if [ -n \"\${ENV}\" ]; then printf \"${COLOR_YELLOW}\"; else printf \"${COLOR_GREEN}\"; fi;; esac\`"
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PS1_HOSTNAME="${PS1_HOSTNAME_COLOR}\$(hostname |sed 's/\..*//')${COLOR_NC}"
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PS1_USER_COLOR="\$(if [ \"\$(id -u)\" = 0 ]; then printf \"${COLOR_RED}\"; else printf \"${COLOR_BROWN}\"; fi)"
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PS1_USER="${PS1_USER_COLOR}\$(id -nu)${COLOR_NC}"
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PS1_WORKDIR="${COLOR_GRAY}\$(pwd |sed 's|^'\${HOME}'\(/.*\)*$|~\1|')${COLOR_NC}"
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export PS1="${PS1_COUNT}${PS1_USER}${COLOR_DGRAY}@${PS1_HOSTNAME}${COLOR_DGRAY}:${PS1_WORKDIR}${PS1_GIT}${PS1_END} "
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unset PS1_COUNT PS1_END PS1_GIT PS1_HOSTNAME PS1_HOSTNAME_COLOR PS1_USER PS1_USER_COLOR PS1_WORKDIR
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}
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## screen_attach() attaches existing screen session or creates a new one
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screen_attach() {
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command -v screen >/dev/null 2>&1 || return
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SCREEN_SESSION="$(id -nu)@$(hostname |sed 's/\..*//')"
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if [ -z "${STY}" ]; then
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# attach screen in tmux window 0 only ;)
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[ -n "${TMUX}" ] && [ "$(tmux list-window 2>/dev/null |awk '$NF == "(active)" {print $1}' |sed 's/:$//')" != "0" ] && return
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printf 'Attaching screen.' && sleep 1 && printf '.' && sleep 1 && printf '.' && sleep 1
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exec screen -xRR -S "${SCREEN_SESSION}"
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fi
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unset SCREEN_SESSION
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}
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## screen_detach() detaches current screen session
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screen_detach() {
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screen -d
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}
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|
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## ssh_add() loads all private keys in ~/.ssh/ to ssh agent
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ssh_add() {
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command -v ssh-agent >/dev/null 2>&1 && command -v ssh-add >/dev/null 2>&1 || return
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SSH_AGENT_DIR="/tmp/ssh-$(id -u)"
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SSH_AGENT_SOCK="${SSH_AGENT_DIR}/agent@$(hostname |sed 's/\..*//')"
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# launch a new agent
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if [ -z "${SSH_AUTH_SOCK}" ]; then
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[ ! -d "${SSH_AGENT_DIR}" ] && mkdir -p "${SSH_AGENT_DIR}" 2>/dev/null && chmod 0700 "${SSH_AGENT_DIR}"
|
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# search for an already running agent
|
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if ps wwx -o args |awk '$1 ~ "ssh-agent$" && $3 == "'"${SSH_AGENT_SOCK}"'"' |wc -l |grep -q 0; then
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rm -f "${SSH_AGENT_SOCK}"
|
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ssh-agent -a "${SSH_AGENT_SOCK}" >/dev/null 2>&1
|
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fi
|
||||
fi
|
||||
# attach to agent
|
||||
export SSH_AUTH_SOCK="${SSH_AUTH_SOCK:-${SSH_AGENT_SOCK}}"
|
||||
# list private keys to add
|
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# shellcheck disable=SC2068
|
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for dir in ${@:-${HOME}/.ssh}; do
|
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if [ "${SSH_ADD_RECURSIVE:-}" = true ]; then
|
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GREP_RECURSIVE_FLAG="r"
|
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else
|
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GREP_RECURSIVE_CHAR="*"
|
||||
fi
|
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SSH_PRIVATE_KEYS="${SSH_PRIVATE_KEYS:-} ${dir}/id_rsa $(grep -l${GREP_RECURSIVE_FLAG:-} 'PRIVATE KEY' "${dir}"/"${GREP_RECURSIVE_CHAR:-}" 2>/dev/null |grep -vw "${dir}"/id_rsa)"
|
||||
done
|
||||
# shellcheck disable=SC2086
|
||||
printf '%s\n' ${SSH_PRIVATE_KEYS} |while read -r file; do
|
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[ -r "${file}" ] || continue
|
||||
# add private key to agent
|
||||
ssh-add -l |grep -q "$(ssh-keygen -lf "${file}" 2>/dev/null |awk '{print $2}')" 2>/dev/null || ssh-add "${file}"
|
||||
done
|
||||
unset GREP_RECURSIVE_CHAR GREP_RECURSIVE_FLAG SSH_AGENT_DIR SSH_AGENT_SOCK SSH_PRIVATE_KEYS
|
||||
}
|
||||
|
||||
## ssh_del() removes all private keys in ~/.ssh/ from ssh agent
|
||||
ssh_del() {
|
||||
command -v ssh-add >/dev/null 2>&1 || return
|
||||
# attach to agent
|
||||
if [ -z "${SSH_AUTH_SOCK}" ]; then
|
||||
return
|
||||
fi
|
||||
# list private keys to del
|
||||
# shellcheck disable=SC2068
|
||||
for dir in ${@:-${HOME}/.ssh}; do
|
||||
if [ "${SSH_DEL_RECURSIVE:-}" = true ]; then
|
||||
GREP_RECURSIVE_FLAG="r"
|
||||
else
|
||||
GREP_RECURSIVE_CHAR="*"
|
||||
fi
|
||||
SSH_PRIVATE_KEYS="${SSH_PRIVATE_KEYS:-} ${dir}/id_rsa $(grep -l${GREP_RECURSIVE_FLAG:-} 'PRIVATE KEY' "${dir}"/"${GREP_RECURSIVE_CHAR:-}" 2>/dev/null |grep -vw "${dir}"/id_rsa)"
|
||||
done
|
||||
# shellcheck disable=SC2086
|
||||
printf '%s\n' ${SSH_PRIVATE_KEYS} |while read -r file; do
|
||||
[ -r "${file}" ] || continue
|
||||
# remove private key from agent
|
||||
ssh-add -l |grep -q "$(ssh-keygen -lf "${file}" 2>/dev/null |awk '{print $2}')" 2>/dev/null && ssh-add -d "${file}"
|
||||
done
|
||||
unset GREP_RECURSIVE_CHAR GREP_RECURSIVE_FLAG SSH_PRIVATE_KEYS
|
||||
}
|
||||
|
||||
## tmux_attach() attaches existing tmux session or creates a new one
|
||||
tmux_attach() {
|
||||
command -v tmux >/dev/null 2>&1 || return
|
||||
TMUX_SESSION="$(id -nu)@$(hostname |sed 's/\..*//')"
|
||||
if [ -z "${TMUX}" ]; then
|
||||
printf 'Attaching tmux.' && sleep 1 && printf '.' && sleep 1 && printf '.' && sleep 1
|
||||
exec tmux -L"${TMUX_SESSION}" new-session -A -s"${TMUX_SESSION}"
|
||||
fi
|
||||
unset TMUX_SESSION
|
||||
}
|
||||
|
||||
## tmux_detach() detaches current tmux session
|
||||
tmux_detach() {
|
||||
tmux detach
|
||||
}
|
||||
|
||||
## user_count() prints number of "users sessions"/"users"/"logged users"
|
||||
user_count() {
|
||||
ps ax -o user,tty 2>/dev/null |awk '
|
||||
$2 ~ /^(pts|tty)/ {users_session++; logged[$1]++;};
|
||||
{count[$1]++;}
|
||||
END {
|
||||
for (uc in count) {c = c" "uc;}; users_count=split(c,v," ")-1;
|
||||
for (ul in logged) {l = l" "ul;}; users_logged=split(l,v," ")-1;
|
||||
print users_session+0"/"users_count"/"users_logged;
|
||||
}'
|
||||
}
|
||||
@@ -0,0 +1 @@
|
||||
github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
|
||||
@@ -0,0 +1,12 @@
|
||||
[Unit]
|
||||
Description=Increased Performance In Linux With zRam (Virtual Swap Compressed in RAM)
|
||||
|
||||
[Service]
|
||||
Type=oneshot
|
||||
RemainAfterExit=yes
|
||||
EnvironmentFile=-/etc/sysconfig/zram
|
||||
ExecStart=/etc/init.d/zram start
|
||||
ExecStop=/etc/init.d/zram stop
|
||||
|
||||
[Install]
|
||||
WantedBy=sysinit.target
|
||||
Reference in New Issue
Block a user