Shell built-in commandsSome shell built-in commands take options as described in individual entries. These are often called 'flags' to avoid confusion with shell options, which may also have an effect on the behavior of built-in commands. In this introductory section, 'option' always has the ...
允许或禁止 shell 内建命令。禁止一个内建命令使得磁盘上的与内建命令同名的文件得以运行,不必使用它的全路径,即使 shell 一般在搜索磁盘上的命令之前搜索内建命令。如果使用了-n选项,每个name都被禁止;否则,name被允许。例如,要使用PATH中搜索到的test命令而不是 shell 内建的那一个,可以运行 ``enable -n tes...
1 一直用着UBUNTU挺好的，今天打开时等了好久卡死在启动画面，过了好久出现了黑屏，并在上面显示BusyBox v1.1.3 (Debian 1:1.1.3-5ubuntu7) Built-in shell (ash)Enter 'help' for a list of built-in commands(initramfs)根据提示输入“HELP”之，又出来：.:alias break cd chdir command ...
简单的说BusyBox就好像是个大工具箱,它集成压缩了 Linux 的许多工具和命令。 Linux系统开机时,有时会出现BusyBox v1.22.1 built-in shell(ash)的提示信息,无法正常开机。 BusyBox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu) built-in shell(ash) Enter 'help' for a list of built-in commands (initramfs) ...
BusyBox v1.1.3(Debian1:1.1.3-5ubuntu12) Built-in shell(ash)Enter'help'for a list of built-in commands (initramfs)当我输入help后就显示下面的信息：.：alias break cd chdir command continue echo eval exec exit export false getopts hash help let local pwd read readonly return ...
Part of an if construct. enable 7 Enable and disable built-in shell commands. esac 5 Reserved word. Part of a case construct. eval 7 Run the given arguments through command-line processing. exec 9 Replace the shell with the given program. exit 5 Exit from the shell. export ......
(2)用于Shell脚本,退出当前Shell进程。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #正常结果 exit0#异常退出 exit1 (3)使用trap内建命令,用于挂载Shell进程结束前需要执行的命令。格式为:trap “commands” EXIT。如脚本exit.sh: 代码语言:javascript ...
(3)挂载Shell进程结束前需要执行的命令。格式为:trap “commands” EXIT。如脚本exit.sh: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #!/bin/bash echo "start" trap "echo 'end'" EXIT echo "before exit" exit 0 执行exit.sh输出: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 start ...
-name:Execute the command in remote shell; stdout goes to the specified file on the remoteansible.builtin.shell:somescript.sh >> somelog.txt-name:Change the working directory to somedir/ before executing the commandansible.builtin.shell:somescript.sh >> somelog.txtargs:chdir:somedir/# You...
built-in commands W: 由于文件系统为只读,因而无法使用文件锁 /var/lib/dpkg/lock-frontend W: 由于文件系统为只读,因而无法使用文件锁 /var/lib/dpkg/lock E: dpkg 被中断,您必须手工运行 ‘dpkg --configure -a’ 解决此问题。 ~/soft/nat123linux201505 $ apt-get autoremove...