bash框架

#!/bin/bash TIMESTAMP=$(date "+%T") # If you need to save logs somewhere, use logger or tee. For example: # logger -p local7.debug "${TIMESTAMP} ERROR: non zero return code from line: $line -- $@" function __init () { case $1 in '--debug') DEBUG_MODE=1 __debugging_info # set -o xtrace # Trace the execution of the script (debug) ;; '--help') cat << EOF Usage: --help Displays this help --debug Displays verbose output EOF exit 0 ;; esac } function __debugging_info { echo "About this system" hostnamectl timedatectl echo "Users online:" w -h echo "Memory usage:" free -h echo "Storage usage:" df -hP df -i du -Sh / -d 1 2> /dev/null | grep -wv 0 echo "uptime + load-average" uptime echo "Cpu:" echo "Cores $(grep "model name" /proc/cpuinfo | wc -l)" ps axo user,pid,ppid,cmd,%cpu --sort=%cpu } function __msg_debug() { [[ "${DEBUG_MODE}" == "1" ]] && echo -e "${TIMESTAMP} [DEBUG]: $*" } # Usage # __mms_debug "This error will be displayed if --debug enabled" function __error_exit() { line=$1 shift 1 echo "${TIMESTAMP} ERROR: non zero return code from line: $line -- $@" exit 1 } # Usage: # let a++ || error_exit "$LINENO" "let operation returned non-zero code