The loop structure is one of the key components of every programming language including Bash. They are used to repeat the specified instructions against a condition. Frequently employed loop structures in Bash scripting arefor,while, anddo-while. In Bash scripting, thewhileloop functions by repeatin...
while 循环用于不断执行一系列命令,也用于从输入文件中读取数据;命令通常为测试条件。其格式为: while condition do command done 无限循环 无限循环语法格式: while : do command done 或者 while true do command done 或者 for (( ; ; )) until 循环 until 循环执行一系列命令直至条件为真时停止。 until 循...
An infinite While loop means your script will run the loop commands non-stop. Infinite While loops never stop running and this occurs when the condition always turns out to be “True.” You can create an infinite While loop with the following command: You can use the built-in ":"or "tr...
如果我在while-loop中使用服务器名,它可以工作,但是我需要为每个服务器使用一个while-loop,而不是一个。所以这就是我现在所拥有的,但我不能让它运行。我对剧本有点陌生,所以我很感谢所有的帮助 #!/bin/bash servers=("qaServerName1 qaServerName2 qaServerName3 ... ...") for VARIABLE in $servers do...
You can easily evaluate the options passed on the command line for a script using while loop: ... .. while getopts ae:f:hd:s:qx: option do case "${option}" in a) ALARM="TRUE";; e) ADMIN=${OPTARG};; d) DOMAIN=${OPTARG};; f) ...
# read each line and split on , while IFS=, read -r file id1 id2; do # execute the command command -base "$file" -tp "$id1" -tp "$id2" -all done } < my_ids.csv 读https://mywiki.wooledge.org/BashFAQ/001。用https://shellcheck.net检查脚本。
# use $line variable to process line echo $line done exec 0<&3 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. You can easily evaluate the options passed on the command line for a script using while loop: ... .. while getopts ae:f:hd:s:qx: option do case...
While ShellCheck is mostly intended for interactive use, it can easily be added to builds or test suites. It makes canonical use of exit codes, so you can just add ashellcheckcommand as part of the process. For example, in a Makefile: ...
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 ...
How to do a do-while loop in bash? How to create an infinite loop in bash? How to find if a number is odd or even in bash? How to iterate over a bash array? How to loop over each line of a file? How to iterate over a list of files? How to use numbers with leading zeros...