trap -- 'code' EXIT trap -- 'echo SIGINT' SIGINT trap "some code" EXIT: 仅在shell中可用的编号为0的特殊信号, 在bash中代表处理所有的退出情况, 而在标准shell中则用于捕捉exit. > trap "code" EXIT > ^D # 退出终端的同时会打开 vscode trap "some code" ERR: 捕捉执行出现错误的命令, 在命令...
isvalidip() #@ USAGE: isvalidip DOTTED-QUAD { case $1 in ## reject the following: ## empty string ## anything other than digits and dots ## anything not ending in a digit "" | *[!0-9.]* | *[!0-9]) return 1 ;; esac ## Change IFS to a dot, but only in this functio...
/bin/bash trap ' echo X $FAIL; [[ $FAIL -eq 1 ]] && exit 22 ' EXIT touch ab c d e for i in c d e a b; do cat $i || export FAIL=1 echo F $FAIL done
1. bash builtin commands(fedora38-GNU Bash 5.2) BASH_BUILTINS(1) General Commands Manual BASH_BUILTINS(1)23NAME4:, ., [, alias, bg, bind, break, builtin, caller, cd, command, compgen, complete, compopt, continue, declare, dirs, disown,echo,5enable, eval, exec, exit, export,false...
trap 'printf \\e[2J\\e[H\\e[m' EXIT 忽略终端中断(CTRL + C,SIGINT) trap '' INT 对窗口调整大小做出反应 # Call a function on window resize. trap 'code_here' SIGWINCH 在每个命令之前做点什么 trap 'code_here' DEBUG 当shell函数或源文件完成执行时执行某些操作 ...
A function can be called on a EXIT before the shell terminates. Example: by calling the exit function, the following finish function will run thanks to the registration of the function via the trap utility #!/bin/bash function finish { # Your cleanup code here } trap finish EXIT Copy ...
for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 done printf '%s\n' "${!tmp_array[@]}" } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 用法示例: $ remove_array_dups 1 1 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 ...
⚠️ Be careful when enabling trap on functions’ RETURN as it may change how your script behaves. Especially when you expect a certain string from the function standard output to be passed back to a variable. The trap standard output will take precedence over your normal function standard ...
DEBUG_TRAP == NSIG; some code below assumes this. */ static int sigmodes[BASH_NSIG]; static void free_trap_command (int); static void change_signal (int, char *); static int _run_trap_internal (int, char *); static void free_trap_string (int); static void reset_signal...
Function change_rootThis function performs a linux change root if needed and provides all kernel api filesystems in target root by using a change root interface with minimal needed rights.Example:change_root /new_root /usr/bin/env bash some arguments...