How to write shell script to realize Loop statement
This article mainly introduces "how to write shell scripts to achieve circular statements". In daily operation, I believe many people have doubts about how to write shell scripts to achieve circular sentences. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "how to write shell scripts to achieve circular statements". Next, please follow the editor to study!
The code is as follows:
#! / bin/sh
# the most basic usage of the for loop
For var in "hello"xiao ta"welcome to www.yisu.com"
Do
Echo-n "$var"
Done
Echo
# wildcard extension
For var in $(ls * .sh)
Do
Echo "$var"
Done
# while loop, followed by conditions like if
Echo "please input secret"
Read secret
While ["$secret"! = "xiao ta"]
Do
Echo "try again"
Read secret
Done
# until loop, contrary to while, is executed only if it is false.
Echo "please input text"
Read text
Until ["$text" = "xiao ta"]
Do
Echo "try again"
Read text
Done
Exit 0
At this point, the study on "how to write shell scripts to achieve circular statements" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!
