$ 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...
$string=($string) $string="${string[@]^}" $echo"$string" A Few Words $declare-cstring $string=(a few words) $echo"${string[@]}" A Few Words $string="a FeW WOrdS" $string=${string,,} $string=${string~} $echo"$string" A few words 对一个declare转弯开关+属性时,使用。for ex...
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...
,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....
${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 $PATH /usr/sbin:/usr/bin:/export/home/ftp/pub/:/etc/vx/bin:/opt/VRTS/bin:/opt/VRTSvcs/bin:/opt/VRTSat/bin:/sbin:/usr/sbin:/usr/local/bin:/export/home/ftp/...
Shell Script to Converts UPPERCASE to Lowercase A script that convertsUPPERCASEtolowercaseand redirects the output to a text file “small.txt” which can be modified as required. #!/bin/bash echo -n "Enter File Name : " read fileName ...
Write a Bash script that checks if a given string is empty and prints a message accordingly. Code: #!/bin/bash# Shebang line: Indicates the path to the shell interpreter (in this case, bash)# Define a stringinput_str=""# Check if the string is emptyif[-z"$input_str"];thenecho"...
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...
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.";; ...
Script naming conventions Adhering to naming conventions for scripts enhances clarity and organization. Common practices include: –Using descriptive names that reflect the script’s purpose. –Preferring lowercase letters and avoiding spaces. –Using underscores (`_`) to separate words. ...