1.DESCRIPTION: Shell builtin commands are commands that can be executed within the run-ning shell's process. Note that, in the case of csh(1) builtin commands,the command is executed in a subshell if it occurs as any component of a pipeline except the last. 2.shell built-in commands:...
返回状态是 false,如果指定的shell-builtin并不是一个 shell 内建命令。 cd[-L|-P] [dir] 改变当前路径到dir。这个变量的默认值是HOME目录。环境变量CDPATH定义了包含dir的搜索路径。在CDPATH中可选的路径名以冒号(:) 分隔。CDPATH中的空路径名与当前路径相同,就是 ``.''. 如果目录名以斜杠 (/,slash) ...
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 ...
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 ...
builtinshell-builtin[arguments] 执行指定的 shell 内建命令,传递arguments,返回命令的返回值。这在定义了一个和 shell 内建命令同名的函数时很有用,在那个函数中使用它来执行相应的功能。cd命令常以这种方式重新定义。返回状态是 false,如果指定的shell-builtin并不是一个 shell 内建命令。
BusyBox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu) built-in shell(ash) Enter 'help' for a list of built-in commands (initramfs) 此时,输入exit会显示以下信息: /dev/sda2 contains a file system with errors, check forced. Inodes that were part of a corruptde orphan linked list found. ...
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 ...
enable7Enable and disable built-in shell commands. esac5 Reserved word. Part of acaseconstruct. eval7Run the given arguments through command-line processing. exec9Replace the shell with the given program. exit5Exit from the shell. export ... ...
-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...
The following is a list of Bourne shell built-in commands. ItemDescription :Returns a zero exit value .Reads and executes commands from a file parameter and then returns. breakExits from the enclosingfor,while, oruntilcommand loops, if any. ...