bash convert string to uppercase
var=hello #For Bash Version higher than 4.3.33 try these echo ${var''} #Uppercase whole string HELLO echo ${var'} #Uppercase only first char of string Hello var2=BYE echo ${var2,} #Lowercase whole string bye echo ${var2,,} #Lowercase only first char of string bYE echo $var | tr 'a-z' 'A-Z' #For lower versions of Bash just use tr command HELLO
bash how to convert text to lowercase or uppercase
# Basic syntax: tolower(string) 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
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