Bash uppercase

Bash how to convert text to lowercase or uppercase

# Basic syntax:
awk '{print tolower(string)}'
awk '{print toupper(string)}'

# Example usage:
awk '{print tolower($0)}' input_file
# This prints every row ($0) converted to lowercase

awk '{print toupper($3)}' input_file
# This would print the third field ($3) converted to uppercase

Source: thomas-cokelaer.info

Bash - Convert a string from uppercase to lowercase

$ echo "$a" | tr '[:upper:]' '[:lower:]'
hi all

Source: stackoverflow.com

Convert capital letters to lowercase in shell script

x="HELLO"
echo $x  # HELLO

y=${x,,}
echo $y  # hello

z=${y^^}
echo $z  # HELLO

Source: stackoverflow.com

How to compare a character to uppercase in bash script

echo "enter a char"
read c

if [[ $c == [A-Z] ]];
then
    echo "upper"
elif [[ $c == [a-z] ]];
then
    echo "lower"
else 
    echo "Digit or special symbols!"
fi

-1

Source: unix.stackexchange.com

Similar codes

0 vote273 views2 answers
Mysql2 installation
Shell/Bash
0 vote289 views1 answer
Send email with Gitlab docker image
Shell/Bash
0 vote297 views1 answer
Grep extract pipe delimited
Shell/Bash
4 votes267 views2 answers
Angular clear cache
Shell/Bash
0 vote273 views1 answer
Set default permission to user for git use
Shell/Bash
0 vote307 views1 answer
Ubuntu system specificaiton
Shell/Bash
12 votes292 views2 answers
Flutter doctor --android-licenses java error
Shell/Bash
2 votes263 views6 answers
Git hub
Shell/Bash
0 vote288 views1 answer
Linux how to find files with broken link
Shell/Bash
0 vote297 views1 answer
Plugin custom code to install another plugin
Shell/Bash