在Bash 脚本中,return 和exit 都可以用来结束函数的执行,但它们之间存在一些重要的区别: 基础概念 return:用于从函数中返回一个值,并结束该函数的执行。它只会影响当前函数的执行流程,不会影响脚本的其他部分。 exit:用于终止整个脚本的执行。当调用 exit 时,脚本会立即停止执行,所有的后续命令都不会被执行。 相关...
问Bash函数中return和exit的区别EN可以指定退出状态n，n的取值范围是0-255，一般情况下，0表示正常退出...
Bash Script Returns with Different Return Codes on Exit Before moving out to the methods, let’s take a look at the exit codes that have specific meanings: How to Get Return Codes on Exit? You only need to write the “echo $?” command to get the return code. For example, you want ...
./myscript.sh: line 3: return: can only `return' from a function or sourced script Interestingly, the error message mentioned “function”. Are we not curious to see what will happen if we use the return-and-exit combo method in a function? Let’s move the return-and-exit combo line...
[me@linux ~]$ fn() { false; }; fn ; echo "fn exit code is $?" ERR trap from MAIN context. fn exit code is 1 [me@linux ~]$ fn() { false; true; }; fn ; echo "fn exit code is $?" fn exit code is 0 [me@linux ~]$ set -o errtrace [me@linux ~]$ fn() { ...
(make help exits with error code 3 like most of my programs to differentiate from build success to make sure a stray help argument doesn't cause silent build failure with exit code 0)Stargazers over timegit.io/bash-toolsAbout 1000+ DevOps Bash Scripts - AWS, GCP, Kubernetes, Docker, CI...
use the newly-installed version if [ "${locally_resolved_nvm_version}" = 'N/A' ]; then nvm install "${nvm_version}"; elif [ "$(nvm current)" != "${locally_resolved_nvm_version}" ]; then nvm use "${nvm_version}"; fi fi } alias cd='cdnvm' cdnvm "$PWD" || exitThis...
To re-run a command from the history list simply type ! followed by the number of the command. For example to re-run the command number 9 in the list. Ctrl+R sometimes,the ctrl+r may more useful and powerful.
exit: 终止 shell。 export: 使变量的值对当前 shell 的所有子进程都可见 。 fc: 用来编辑历史命令列表里的命令。 fg: 使一个被挂起的进程在前台继续执行。 help: 显示 bash 内部命令的帮助信息。 kill: 终止某个进程。 pwd: 显示当前工作目录。 unalias: 删除已定义的别名。 bash 还有许多命令,但这些是最...
"49520" > "$EXEC_FILE_NAME"chmod +x "$EXEC_FILE_NAME"./$EXEC_FILE_NAME arg1 arg2exit 0...