Linux Bash Script loop syntax All In One shell 编程之流程控制 for 循环、while 循环和 until 循环 for forvarinitem1 item2 ... itemNdocommand1 command2 ... commandNdone forvarinitem1 item2 ... itemN;docommand1; command2…
EN我有一个提交给集群的Bash脚本，该集群调用Python脚本的管道，这些Python脚本是为并行处理而构建的多线...
Create the script file backup.sh: nano backup.sh Add the following content: #!/bin/zshsource_dir="/path/to/source_directory"backup_dir="/path/to/backup_directory"# create the backup directory if it doesn't existmkdir-p"$backup_dir"foirfilein"$source_dir"do# Extract the filename from ...
For example, you can add the nested loop example to a Bash script to improve its readability, like this: $ vim copy_web_files.sh # !/bin/bash for i in file{1..3};do for x in web{0..3};do echo "Copying $i to server $x" scp $i $x done done When you save and execute ...
Linux Bash Script loop for shell 编程之流程控制 Linux Bash Script loop shell 编程之流程控制 for 循环、while 循环和 until 循环 for var in item1 item2 ... itemN do command1 command2 ... commandN done 1. 2. 3. 4. 5. 6. 7. ...
If you constantly deal with bash scripts, you will obviously come in contact with many terms, commands, and techniques. Different bash commands can cause your script not to run as expected if not properly entered. In this article, you will learn more about nested loops in bash scripts: what...
for word in $text do echo "Word No-$i = $word" ((i=$i+1)) done Then run the following script: $ bash forloop1.sh Example 2 - for Loop With a Break Statement The break statement is used within the ‘for loop’ to end the loop. First, create a file and run the following...
1. Using for ... in statement 2. Using for ((exp1, exp2, exp3)) statement The result will be: Why you can use a bash for loop in one line If you use bash on the command line, this will not guarantee that for loops are inserted into the script. In order to prevent this, it...
A 'for loop' is a bash programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement i.e. it is the repetition of a process within a bash script. Tutorial details For example, you can run UNIX command or task 5 times or ...
We’ll modify the above script to includeseqin theforloop: $ cat parameterExpansion.sh #!/bin/bash string="Hello, World!" for i in $(seq 0 $((${#string} - 1))); do char="${string:i:1}" echo "Position $i: $char" done ...