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02-03-2008
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Regarding PS1,PS2,PS3,PS4 variables.
Hello frnds...
I m asking a general question... thought I never faced and used this (PS3) variable... or may be i m not aware of this... I know very well about the unix prompt string variables PS1,PS2,PS4. but please tell me what is the use of PS3 and where it's used. I didnt find anything satisfactory thing by googling... thanks,, Anchal. 
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02-03-2008
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thanks pt14 for replying..
but the same thing i got on the net... isnt clear for me... can u please explain this.... preferably by example... that actually whre PS3 come into the picture... thanks again...
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02-04-2008
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Run this to find out:
Code:
#!/bin/ksh
quitstr=Exit
choices="a b c d $quitstr"
PS3="Enter your choice: "
select opt in $choices ; do
[ "${opt}" = "${quitstr}" ] && break
[ "x${opt}" = "x" ] && continue
echo "You chose : $opt"
done
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02-04-2008
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very thanks rikxik.. got it.
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02-04-2008
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Consider the script:
select i in jan feb mar exit do case $i in jan) echo "Jan";; feb) echo "feb";; mar) echo "mar";; exit) exit;; *) echo "invalid entry";; esac done Run the script when you have not set PS3: 1) jan 2) feb 3) mar 1 Jan When you have set PS3 PS3="Select a month: " 1) jan 2) feb 3) mar Select the item number: 1 Jan Hope this helps
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