Shell scripting, specifically Bash scripting, is a great way to automate repetitive or tedious tasks on your systems. Why type when you can schedule and run scripts in a hands-free manner? One of the many scripting constructs is the loop. A loop is a section of code that picks up data ...
/bin/bash # 打印数字0到9,每个数字打印间隔1秒 for i in {0..9} do echo $i sleep 1 done 参考链接 Linux Shell Scripting Tutorial - Loops Bash For Loop Examples 通过以上内容,您可以了解Linux循环的基本概念、类型、应用场景以及常见问题的解决方法。希望这些信息对您有所帮助。
For Loops Unlike most loops, the for loop does not test the condition of a variable each time it goes around the loop. Instead, it starts with a list of … - Selection from Shell Scripting: Expert Recipes for Linux, Bash, and More [Book]
Imagine that you have a file that you want toscpto several servers. Remember that you can combine theforloop with other Bash features, such as shell expansion, which allows Bash to expand a list of items that are in a series. This can work for letters and numbers. For example: $echo{...
Running for loop from bash shell command line: $ for f in $( ls /var/ ); do echo $f; done 1. 2. 3. 4. 5. 6. 7. 8. 12.2. Bash while loop #!/bin/bashCOUNT=6 # bash while loop while [ $COUNT -gt 0 ]; do echo Value of count is: $COUNT ...
shell 脚本 # 变量:注意 shell 中的变量等于号前后不要有空格 a="I am cat" echo$a 1. 2. kotlin 脚本 // variable vala="I am cat" println(a) 1. 2. 3. 数组与循环 shell 脚本 #数组&forloop nums=(12345678910) declare-isum=0
创建shell 脚本并设置其权限后,将脚本文件放在命令路径下的某个目录中,然后在命令行上运行脚本名称,即可运行该脚本。 如果脚本位于当前工作目录下,也可以运行 ./script,或者使用完整路径名。 As with any program on Unix systems, you need to set the executable bit for a shell script file, but you must ...
How to use a for loop in bash scripting? What are the basic syntax elements of a bash for loop? Can you provide an example of iterating through a list with a for loop in bash? This type of for loop is characterized by counting. The range is specified by a beginning (#1) and endin...
You will learn various operators available in shell scripting. You will get to know about control statements like if,if-else,for loop,while loop,select loop,until loop,switch case etc. You will learn function prototyping,function calling in shell script. You will get to know how to deal with...
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-like systems, the myriad of cryptic commands might be cause for concern. Besides, in addition to...