# 自定义列表forloopin12345doecho"loop=$loop"doneexit0deyuy/bin/my_shell >>chmodu+x for1.shdeyuy/bin/my_shell >> ./for1.shloop=1loop=2loop=3loop=4loop=5还可以通过读取文件内容生成变量列表deyuy/bin/my_shell >>vim num.txt12345 6 7 8 #!/bin/bash # Program: # This program will...
for i in {1..10} ;do userdel -r user$i ;done 3、/etc/rc.d/rc3.d目录下分别有多个以K开头和以S开头的文件;分别读取每个文件,以K开头的输出为文件加stop,以S开头的输出为文件名加start,如K34filename stop S66filename start for files in /etc/rc.d/rc3.d/[KS]* ;do if [ `basename $f...
breakexits from afor,select,while, oruntilloop in a shell script. Ifnumberis given,breakexits from the given number of enclosing loops. The default value ofnumberis1. Usage Notes This is a special built-in command of the shell. Exit Values breakalways exits with an exit status of0....
shell脚本报错:"syntax error: unexpected end of file" 原因和解决 2019-12-25 20:38 − 在windows用notepad++编辑的shell脚本,拷贝到centos执行时,报错如下: 导致报错的可能原因:原因1:Windows的文本默认是dos格式,换行符 CR LF。Linux的文本是unix格式,换行符 LF。另外,Mac系统下文本换行符为 CR... io...
Unix和Linux上最广泛使用的归档工具是tar命令, tar命令最开始是用来将文件写到磁带设备上归档的,然而它也能把输出写到文件里. tar function [options] object1 object2 ... tar命令选项 理解shell 一个shell 命令就是一个子进程。 命令列表就是使用括号包围起来的一组命令,它能够创建出子shell来执行这些命令。
PowerShell ForEach($userin$users) {Set-ADUser$user-Department"Marketing"} 在前面的示例中,有一个名为$users的数组,其中包含 Active Directory 域服务 (AD DS) 用户对象。 ForEach 构造会为每个对象处理一次大括号之间的 Windows PowerShell 命令。 处理命令时,$user是包含数组中每个项的变量。 ...
Ever wish that find were a built-in shell loop? Do you want your script to work on nearly any shell on any Unix-like OS?Modernish is a library for shell script programming which provides features like safer variable and command expansion, new language constructs for loop iteration, and much...
A shell script is simply a text file containing a sequence of commands. When you run the file—or script—it executes the commands contained in the file. The term shell simply refers to the particular command-line user interface you use to communicate with the Linux kernel. Several different...
This is the meaning of the first line found in all of the script examples: #!/bin/bash Why Use Shell Scripts? Depending on your background, you may not see any immediate value to shell scripting as it relates to the DBA’s work. If you do not have experience with UNIX or UNIX-...
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