topic Re: Changing a string to lower cases in korn shell script in Operating System - HP-UX

Changing a string to lower cases in korn shell script

Lorenzo Meneguzzi — Wed, 16 Apr 2003 09:07:41 GMT

Hello,
I want to change the value stored in a string variable to all lower case.
For instance :
VAR1=AbcD then I want this variable becomes :
VAR1=abcd
How can I do that ?
Thanks in advance for your help.
Laurent MENEGUZY

Re: Changing a string to lower cases in korn shell script

Stefan Farrelly — Wed, 16 Apr 2003 09:12:48 GMT

echo test|tr "[:lower:]" "[:upper:]"

Re: Changing a string to lower cases in korn shell script

Pete Randall — Wed, 16 Apr 2003 09:13:05 GMT

echo $VAR1 |tr "[:upper:]" "[:lower:]"

Pete

Re: Changing a string to lower cases in korn shell script

Bill McNAMARA_1 — Wed, 16 Apr 2003 09:14:24 GMT

tr -s '[:upper:]' '[:lower:]'

Re: Changing a string to lower cases in korn shell script

Stefan Farrelly — Wed, 16 Apr 2003 09:14:32 GMT

VAR1=$(echo $VAR1|tr "[:upper:]" "[:lower:]")

Re: Changing a string to lower cases in korn shell script

Paula J Frazer-Campbell — Wed, 16 Apr 2003 09:17:19 GMT

Hi

Varable | tr -s "[A-Z]" "[a-z]"

Paula

Re: Changing a string to lower cases in korn shell script

Francisco J. Soler — Wed, 16 Apr 2003 09:29:09 GMT

The ideas are all good but, but a more complete solution to your problem could be:

VAR1=`echo $VAR1 | tr -s "[A-Z]" "[a-z]"`

Be careful wit the quotation.

Frank

Re: Changing a string to lower cases in korn shell script

Bill Hassell — Wed, 16 Apr 2003 09:38:03 GMT

It's much more efficient to let the shell do the work rather than a separate process:

typeset -l VAR2

VAR1=AbcD
VAR2="$VAR1"
echo $VAR1 $VAR2
AbcD abcd

When assigning strings, it's always a good idea to use double quotes so any imbedded spaces, etc, are preserved. The typeset attribute has more than a dozen formatting options such as UPPERCASE, lowewrcase, left/right justified, zero-fill, etc. typeset is available in POSIX shells such as the HP-UX POSIX shell and ksh as well as BASH.

Re: Changing a string to lower cases in korn shell script

Lorenzo Meneguzzi — Wed, 16 Apr 2003 11:17:51 GMT

Thanks for your help. It's working fine.
Laurent MENEGUZY