您可以调用 lowercase 'my STRING' 并获得小写版本。我阅读了有关将结果设置为 var 的评论,但这在 Bash 中并不是真正可移植的,因为我们无法返回字符串。打印它是最好的解决方案。使用 var="$(lowercase $str)" 之类的东西很容易捕捉。 这是如何工作的 ...
$ echo "${string,,[AEIUO]}" a FeW WoRDS $ string="A Few Words" $ declare -l string $ string=$string; echo "$string" a few words 大写 $ string="a few words" $ echo "${string^}" A few words $ echo "${string^^}" A FEW WORDS $ echo "${string^^[aeiou]}" A fEw wOrd...
new_string=$(echo "$input_string" | tr -dc '[:alnum:]' | tr '[:upper:]' '[:lower:]'): Removes non-alphanumeric characters and converts the string to lowercase using the "tr" command. reversed_string=$(echo "$clean_string" | rev): Reverses the new string using the "rev" com...
String data are used for different purposes in any bash commands or programming script. Sometimes we need to change the case of the string to get the desired output. The string can be converted to uppercase or lowercase. The string data is converted by using ‘tr’ command in the old vers...
Troubleshooting bash script to capitalize first letter in every word Question: In the specified format, I possess a text file. jAY JAY JaY eVAns Evans Evans The objective is to change all text to lowercase and then capitalize the initial letter of each word. Unfortunately, the script is not ...
,if String is empty, use -n or -z ?😂. So here is this repo, to help writing shell script without google and pain. shoud I source libshell in every file? No. you only need source it in the entry file. And there will be no harm if you source it everywhere....
You can also convert a string to lowercase letter or uppercase letters. Let’s first create two string named legend and actor: legend="john nash" actor="JULIA ROBERTS" You can convert all the letters in the legend string to uppercase: kabary@handbook:~/scripts$ echo ${legend^^} JOHN NA...
${varname//pattern/string} 含义:用值string替换varname中模式pattern可以匹配到的最大部分。全局匹配。 举例: root@/-->echo $PATH /usr/sbin:/usr/bin:/export/home/ftp/pub/:/etc/vx/bin:/opt/VRTS/bin:/opt/VRTSvcs/bin:/opt/VRTSat/bin:/sbin:/usr/sbin:/usr/local/bin:/export/home/ftp/...
1. Create the script: vi character.sh 2. Add the following lines to the script file: #!/bin/bash echo "Enter a character:" read var case $var in [[:lower:]] ) echo "You entered a lowercase character.";; [[:upper:]] ) echo "You entered an uppercase character.";; ...
Use regex on a stringThe result of bash's regex matching can be used to replace sed for a large number of use-cases.CAVEAT: This is one of the few platform dependent bash features. bash will use whatever regex engine is installed on the user's system. Stick to POSIX regex features if...