bash脚本退出代码解释 Exit Codes With Special Meanings Table E-1.ReservedExit Codes According to the above table, exit codes1 - 2, 126 - 165, and 255[1]have special meanings, and should therefore be avoided for user-specified exit parameters. Ending a script withexit 127would certainly cause...
/bin/bash## Name: test-bucket-1## Purpose:# Performs the test-bucket number 1 for Product X.# (Actually, this is a sample shell script,# which invokes some system commands# to illustrate how to construct a Bash script)## Notes:# 1) The environment variable TEST_VAR must be set# (...
trap cleanupSIGINTSIGTERMERREXITscript_dir=$(cd"$(dirname "${BASH_SOURCE[0]}")"&>/dev/null&&pwd-P)usage(){cat<<EOFUsage:$(basename"${BASH_SOURCE[0]}")[-h][-v][-f]-p param_value arg1[arg2...]Script description here.Available options:-h,--help Printthishelp and exit-v,--verb...
To point out subtle caveats, corner cases and pitfalls that may cause an advanced user's otherwise working script to fail under future circumstances. Seethe gallery of bad codefor examples of what ShellCheck can help you identify! Table of Contents How to use On the web From your terminal In...
script.sh #!/bin/bash echo "My First Script!" 运行脚本 $ chmod 755 script.sh # chmod +x script.sh $ ./script.sh 好流弊 !你刚刚编写了你的第一个bash脚本。我知道你不理解这个脚本,特别对于脚本中的第一行。不要担心我将在本文中详细介绍shell脚本,在进入任何主题之前,我总是建议在脑海中形成路...
API_RESPONSE_RETURN '{"ret":true,"errmsg":"this is errorMsg","errorcode": 0}' API_RESPONSE_RETURN true "$data" API_RESPONSE_RETURN false "$msg" 这个时候,我们不再依赖 exit code来判定函数的返回状态了. 所有的数据都变成一个标准的JSON输出. 这样调用方就可以很方便的获取函数的返回状态与数据...
:后台运行的最后一个进程的进程ID 本地变量命名规则 创建脚本script.sh #!...# 判断上一个命令是否执行成功 echo "上一个命令执行成功 (返回值: $?)"...1、使用指定Shell解释器 基本语法 sh script.sh 或者 bash script.sh 特点 使用指定的Shell解释器运行脚本(如 sh 或 bash) 无需给脚本赋执行权限,...
值并发生重复赋值时,bash会覆盖该键。这 允许我们有效地删除数组重复。 CAVEAT:需要bash4+ 示例功能: remove_array_dups() { # Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 ...
trap 'echo ERR trap from ${FUNCNAME:-MAIN} context. $BASH_COMMAND failed with error code $?' ERR trap 'debug' DEBUG We can give it a try with our simple example script. #!/usr/bin/env bash # Filename: ./example-xtrace echo "This got executed" v=$1 if [[ -z "${v}" ]...
Install & Update ScriptTo install or update nvm, you should run the install script. To do that, you may either download and run the script manually, or use the following cURL or Wget command:curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash...