bash uppercase bad substitution

Armandres answered on December 17, 2020 Popularity 9/10 Helpfulness 6/10

answer bash uppercase bad substitution

bash uppercase bad substitution

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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

Popularity 9/10 Helpfulness 6/10 Language shell

Source: Grepper

Tags: bash shell string substitution uppercase

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Contributed on Dec 17 2020

Armandres

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bash uppercase bad substitution

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