Most shell command syntax also expands regular expressions to match file names, although the operators might function differently, greatly, or slightly. 大多数Shell命令语法还或多或少地扩展正则表达式以匹配文件名(尽管操作符的功能可能有所不同)。
Finally, I saved the commands to a file and used the shell " source " command to run every command in that file. 最后,我将这些命令保存到一个文件中并使用shell“source”命令运行文件中的每个命令。
Rather than placing the burden on the shell's command line. The find command then executes rm on each file found, thus removing every file beginning with 开头的所有文件,而不是在shell命令行中放那么多参数。然后,find命令对找到的每个文件执行rm,这样就会删除以
For example, your systems administrator might set a helpful default shell prompt for the entire system something that includes your user name, current working directory, and command history number, for instance in the system-wide shell startup file. 例如,您的系统管理员可能在系统范围的Shell启动文件中为整个系统设置了一个很有帮助的缺省Shell提示符,例如,包括您的用户名、当前工作目录和命令历史编号。
This command displays the current value, called the soft limit, of the core file size for the shell, which is applicable for all processes started from that shell. 这个命令显示shell核心文件大小的当前值(软限制),这个值应用于从这个shell启动的所有进程。