【shell】日志打印的函数化和函数复用

#  cat  echoLog.sh

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#!/bin/bash

# A shell subroutine to echo log message to screen and a log file.

LOG_FILE="/var/log/install.log"

DATE_FORMAT=`date "+%Y-%m-%d %H:%M:%S"`

logInfo() {

    local infoMsg="$*"

    echo [Info] [line: `caller 0 |awk '{print $1}'` ] $DATE_FORMAT $infoMsg

    echo [Info] [line: `caller 0 |awk '{print $1}'` ] $DATE_FORMAT $infoMsg  >> $LOG_FILE 2>&1

}

logWarn() {

    local infoMsg="$*"

    echo [Warn] [line: `caller 0 |awk '{print $1}'` ] $DATE_FORMAT $infoMsg

    echo [Warn] [line: `caller 0 |awk '{print $1}'` ] $DATE_FORMAT $infoMsg  >> $LOG_FILE 2>&1

}

logError() {

    local infoMsg="$*"

    echo [Error] [line: `caller 0 |awk '{print $1}'` ] $DATE_FORMAT $infoMsg

    echo [Error] [line: `caller 0 |awk '{print $1}'` ] $DATE_FORMAT $infoMsg  >> $LOG_FILE 2>&1

    exit 1

}

logInfo  "It is an info  level log."

logWarn  "It is a  warn  level log."

logError "It is an error level log."

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Shell脚本的模块化和脚本复用

https://blog.51cto.com/atong/1912179

simpleLog4sh,简单的shell日志框架

https://github.com/maoshuai/simpleLog4sh

How can I log to a specific file in linux using logger command?

https://stackoverflow.com/questions/13423303/how-can-i-log-to-a-specific-file-in-linux-using-logger-command

How can I fully log all bash scripts actions?

https://serverfault.com/questions/103501/how-can-i-fully-log-all-bash-scripts-actions

shell脚本实现分日志级别输出

https://www.linuxidc.com/Linux/2017-02/140381.htm

How can I log to a specific file in linux using logger command?

https://stackoverflow.com/questions/13423303/how-can-i-log-to-a-specific-file-in-linux-using-logger-command