If I know the PID number of a process, how can I get its name? How to run a shell script in the background and get no output
除了在shell脚本中捕获信号,你也可以在shell脚本退出时进行捕获。这是在shell完成任务时执行命令的一种简便方法。 要捕获shell脚本的退出,只要在trap 命令后加上 EXIT信号就行。 #!/bin/bash # Trapping the script exit # trap "echo Goodbye..." EXIT # count=1 while [ $count -le 5 ] do echo "...
# Clear screen on script exit. 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...
bash shell的名 称就是针对Bourne shell的拼写所玩的一个文字游戏,称为Bourne again shell。 Linux 桌面环境1. X Window系统 2. KDE桌面 3. GNOME桌面4. Unity桌面 第2章走进shell 输入命令setterm -inversescreen on 也可以 使用选项off关闭该特性。 输入setterm –background white,然后按回车键, 接着输入set...
It is sometimes useful to get a command to run in the background, and return control to the shell immediately. If the script does not depend upon the results or status of the executed command, there is no need to wait for it to complete. The ampersand symbol (&) at the end of a ...
This may seem obvious, but these messages can get a little confusing when you run a shell script that includes an erroneous command under a different name. 综合起来,你会得到类似于 "ls试图打开/dsafsda,但由于它不存在,所以无法打开" 的信息。这似乎很明显,但当你在以不同的名称运行一个包含错误...
processes runina separate process group. When a background job completes, the shell prints a line containing itsexitstatus. -n Read commands butdonot execute them. This may be used to check a shell scriptforsyntax errors. This is ignored by interactive shells. ...
inside the terminal window, using the standard terminal I/O interface. GUI editors start their own window and present their own interface, independent of terminals. Emacs runs in a GUI by default but will run in a terminal window as well. 注意 编辑文本是你首次开始看到终端和图形界面之间差异的...
The first line in the script file can be used to dictate which shell will be used to run the script. This is the meaning of the first line found in all of the script examples:#!/bin/bashWhy Use Shell Scripts?Depending on your background, you may not see any immediate value to ...
Hardcode Tray - This script fixes hardcoded tray icons in Linux by automatically detecting your default theme, the right icon size, the hard-coded applications, the right icons for each indicator and fix them. Lemonbar - Super fast, lightweight, and mnml status bar for Linux. Login Manager ...