/Shell/Bash/Bash uppercase bad substitution

Bash uppercase bad substitution

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

Similar codes

12 votes142 views1 answer
Check disk usage linux Code Example
Shell/Bash
-6 votes140 views4 answers
Whats the internet
Shell/Bash
0 vote174 views1 answer
Grep a port in mac
Shell/Bash
0 vote103 views1 answer
Ubuntu apt get without cd rom
Shell/Bash
4 votes148 views3 answers
Mac run a shell script
Shell/Bash
8 votes107 views1 answer
Cmd add to path
Shell/Bash
0 vote165 views2 answers
Remove mongodb from mac
Shell/Bash
0 vote288 views1 answer
Install supervisor ubuntu 20.04
Shell/Bash
0 vote151 views1 answer
Delete files with extension recursively
Shell/Bash
0 vote164 views1 answer
Convert cer to crt linux mint
Shell/Bash