# A small example programforusing the newgetopt(1) program. # This program will only work with bash(1) # An similar program using the tcsh(1) script language can be found # as parse.tcsh # Example input and out
apt-get -y autoremoveapt-get autoclean echo -e "\n$(date "+%T") \t Script Terminated" 该脚本还处理不再需要的旧包。您需要使用sudo运行此脚本,否则它将无法正常工作。 赞2 2人点赞 打赏
/bin/bash:' This script calculates the squareof5.'((area=5*5))echo $area 注意多行注释是如何放置在内部的:“和” 字符。 5、While 循环 while 循环构造用于多次运行某些指令。查看以下名为 while.sh 的脚本,以更好地理解此概念。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #!/bin/bashi=...
After expanding each simple command, for command, case command, select command, or arithmetic for command, display the expanded value of PS4, followed by the command and its expanded arguments or associated word list. # ...set[--abefhkmnptuvxBCEHPT] [-o option-name] [arg ...]set[+abe...
The grub-mkconfig command itself is a shell script that runs everything in /etc/grub.d. 经过进一步检查,您会发现/etc/grub.d目录中的每个文件都是一个Shell脚本,用于生成grub.cfg文件的一部分。grub-mkconfig命令本身也是一个Shell脚本,运行/etc/grub.d目录中的所有内容。 Try it yourself as root. (...
Command Line arguments To run a specified script with arguments: ./script.sh hello world, It is friday inside the script, we can get: The numbers of arguments: $# The script name: $0 The first argument: $1 The second argument: $2 All arguments: $* or $@. With $@, we get space...
Running the script with no arguments will show some status output: $ eve-audio-ctl.py Output Devices: hdmi2 hdmi1 active: headphone speaker Input Devices: mic active: internal_mic post_dsp_loopback post_mix_pre_dsp_loopback To switch outputs, useeve-audio-ctl.py -o <output-name>, e....
The $# variable contains the number of arguments in the script. A handy way to iterate through all of the parameters passed involves the use of a while loop and the shift command. This command is what lets you iterate through all the arguments in the argument list (rather than remaining ...
--info-script=名称, --new-volume-script=名称 在每卷磁带最后运行脚本(隐含 -M) -L, --tape-length=NUMBER 写入 NUMBER × 1024 字节后更换磁带 -M, --multi-volume 创建/列出/解压多卷归档文件 --rmt-command=COMMAND 使用指定的 rmt COMMAND 代替 rmt --rsh-command=COMMAND 使用远程 COMMAND 代替 ...
Used to evaluate multiple commands or arguments are once. ex Interactive command exec An interactive line-based text editor. exit Exit from the terminal. expand Convert tabs into spaces in a given file and show the output. expect An extension to the Tcl script, it’s used to automate interac...