trap'echo "An error occurred. Exiting."; exit 1'ERR # 确保目标目录已定义 if[[ -z"${TARGET_DIR:-}"]]; then echo"Error: TARGET_DIR is not defined." exit1 fi # 试运行模式以确保安全 if[["${DRY_RUN:-false}"== "true"]]; then echo"Dry run: Listing files to delete in$TARGET_...
/bin/bashif[["$(whoami)"!=root]];thenecho"Only user root can run this script."exit1fiecho"doing stuff..."exit0 如果您以root身份运行脚本,则退出代码将为零。 否则,脚本将以状态码1退出。 结论 每个shell命令终止时都会返回退出代码。exit命令用于指定退出状态码返回给shell。如果您有任何问题或反馈,...
/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# (...
ShellCheck can make suggestions for improving the robustness of a script: rm -rf"$STEAMROOT/"*# Catastrophic rmtouch ./-l; ls *# Globs that could become optionsfind . -execsh -c'a && b {}'\;# Find -exec shell injectionprintf"Hello$name"# Variables in printf formatforfin$(ls *.tx...
Incorrect use of a compound command when defining a Bash Function Runtime ErrorA Runtime Error will be the next level of errors. The shell script runs with no syntax errors but fails to execute reliably certain tasks. The most common runtime errors in a shell script include: Division by ze...
When you execute a command or run a script, you receive an exit code. An exit code is a system response that reports success, an error, or another condit...
Run a job in background mode. bind Used to bind a keyboard sequence. break Used to exit from a running loop in script. cd Change the directory to another directory. command Run a specific command without the normal shell lookup. continue Resumes the next iteration of the loop in script. ...
Run bash ${0##*/} $ARGS again with different options..." printf "\\n\\e[1;31m%s\\n\\n\\e[0m" "Rootdir exception. Run the script $ARGS again with different options..." exit fi } ## User Information: Configurable variables such as mirrors and download manager options are...
我可以理解,开发人员不想使用苹果使用的旧bash v3。但从用户的帖子来看,安装一个较新的bash并不那么好 所以我看了wireguard的wg-quick。需要支持的唯一变化,两个bash版本都是为了摆脱关联数组SERVICE_DNS,并处理v3的BASHPID。 解决方案 那么就有了一下的操作 ...
Version 3.7.2 2005/11/16 作者:Mendel Cooper mail:thegrendel@theriver.com 这本书假定你没有任何脚本或一般程序的编程知识,但是如果你有相关的知识,那么你将很容易 达到中高级的水平...all the while sneaking in little snippets of UNIX? wisdom and lor... ...