sh #!/bin/bash #监控主机存活的脚本 for ((;;)) do ping -c1 $1 &>/dev/null if [ $? -eq 0 ] then echo -e "`date +"%F %H:%M:%S"`: $1 is \033[32m up \033[0m" else echo -e "`date +"%F %H:%M:%S"`: $1 is \033[31m down \033[0m" fi #脚本节奏控制 生产环境...
/bin/bash##User : Mobanche#Date : 2017-8-1#Description :This shell script is used primarily to identify the state# return value of a loop control that is distinguished from# the return-break-continue-exitif[$#-ne1]thenecho"usage: {conntiue|break|exit|return}"exit1fitest(){for((i=1...
问蟒蛇2019.03:在win10 git-bash中激活breakEN我一直在win10系统中使用anaconda 2018.12 (conda 4.5...
/bin/bashdir=/root/shell grep -e '^ .*cp ' -e '^cp' $dir/* >Cp_Check.txt if [ ! -s Cp_Check.txt ] then return 0 fi#直接执行脚本是会报错的,return仅用于函数中:#return: can only`return' from a function or sourced script 总结return 与 exit的区别 1、exit用于在程序运行的过程...
/bin/bash dir=/root/shell grep -e'^ .*cp '-e'^cp'$dir/* >Cp_Check.txt if[ ! -s Cp_Check.txt ] then return0 fi 直接执行脚本是会报错的 return: can only`return' from a function or sourced script 当前用source或.(点)执行。
In this article, we will take a look at how to use abreakandcontinuein bash scripts. In bash, we have three main loop constructs (for,while,until).Breakandcontinuestatements are bash builtin and used to alter the flow of your loops. This concept of break and continue are available in ...
Loops allow you to run one or more commands multiple times until a certain condition is met. In Bash, break and continue statements allows you to control the loop execution.
1)command ‘script’ filenames command是awk或sed,script是可以被awk或sed理解的命令清单,filenames表示命令所作用的文件清单。 2)正规表达式基本构造块包括: 普通字符:大小写字母、数字、字符。 元字符:.、*、[chars]、^、$、/。例:/a.c/匹配如a+c, a-c, abc行。
Each Bash script example below comes with an explanation. Breaking from a while Loop Use thebreakstatement to exit awhileloop when a particular condition realizes. The following script uses abreakinside awhileloop: #!/bin/bash i=0 while [[ $i -lt 11 ]] ...
After executing the above Bash script, you will get an output like the one below:0 1 2 3 Number 4! We are going to stop here. We are stopped!!! Break Out of the for Loop in BashThe keyword break also can be used to stop the for loop at a specific condition. To do this, ...