google上找到这个stackoverflow上的帖子,才知道Bash 4.0以上版本有更好的办法: 《How to convert a string to lower case in Bash?》 就是${parameter,,pattern},${parameter^^pattern}表达式,表达不会改变原来变量的值 #! /bin/bash # 注意:脚本第一行一定要注明脚本解释器是bash.不能是sh,或dash # 因为sh...
google上找到这个stackoverflow上的帖子,才知道Bash 4.0以上版本有更好的办法: 《How to convert a string to lower case in Bash?》 就是${parameter,,pattern},${parameter^^pattern}表达式,表达不会改变原来变量的值 代码语言:javascript 复制 #! /bin/bash# 注意:脚本第一行一定要注明脚本解释器是bash.不能...
我一直在寻找将字符串从大写转换为小写的方法。所有的搜索结果都显示使用 tr 命令的方法。tr 命令的问题在于,只有在我使用 echo 语句时才能得到结果。例如:y="HELLO"...How can I convert a string from uppercase to lowercase in Bash?
${parameter^} # Convert the first character in ${parameter} to uppercase ${parameter^^} # Convert all characters in ${parameter} to uppercase ${parameter,} # Convert the first character in ${parameter} to lowercase ${parameter,,} # Convert all characters in ${parameter} to lowercase 因...
Shell Script to Converts UPPERCASE to Lowercase A script that convertsUPPERCASEtolowercaseand redirects the output to a text file “small.txt” which can be modified as required. #!/bin/bash echo -n "Enter File Name : " read fileName ...
参考:http://wiki.workassis.com/shell-script-convert-text-to-lowercase-and-uppercase/ 2019-03-1300 雄鞋谋塘 如果使用v4,这就是烘焙。如果没有,这是一个简单,广泛适用的解决方案。此线程上的其他答案(和注释)在创建下面的代码时非常有用。 # Like echo, but converts to lowercase ...
In Linux and Unix systems, tr is a command-line utility that translates, deletes, and squeezes characters from standard input and writes the results to standard output. The tr command can remove repeated characters, convert uppercase to lowercase, and perform basic character replacing and removin...
Case modification. This expansion modifies the case of alphabetic characters in parameter. The pattern is expanded to produce a pattern just as in pathname expansion. The ^ operator converts lowercase letters matching pattern to uppercase; the , operator converts matching uppercase letters to lowerca...
How to convert a string to lower case in Bash? bash中是否有将字符串转换为小写字符串的方法? 例如,如果我有: 1 a="Hi all" 我想把它转换成: 1 "hi all" 相关讨论 See also:stackoverflow.com/questions/11392189 在各种不同的方法是: </P > POSIX标准 TR ...
The `tr` command can be used in the following way to convert any string from uppercase to lowercase. tr[:upper:][:lower:] You can use `tr` command in the following way also to convert any string from lowercase to uppercase.