topic Re: Some script syntax in Operating System - HP-UX

Some script syntax

Ngoh Chean Siung — Thu, 18 Nov 2004 02:38:29 GMT

Hi,

echo "Press [Y]/[y] to continue, [Enter] to quit \c"
read ans rest
if [ -z "$ans" ]
then
exit
fi

Above is part of the script.
1) what is \c for?
2) what is rest for?
3) what is -z for?

regards.

Re: Some script syntax

Trond Haugen — Thu, 18 Nov 2004 02:44:52 GMT

1) Supress return
(Will leave the cursoe after "quit")
2) "Garbage collector".
If user types other words after "y"
3) Test if zero = enter/return

Regards,
Trond

Re: Some script syntax

Bharat Katkar — Thu, 18 Nov 2004 03:08:13 GMT

Hi,

1. if you specify \c then the ouput will be like:

Press [Y]/[y] to continue, [Enter] to quit

if \c is not specified then:
Press [Y]/[y] to continue, [Enter] to quit

3. -z is to see whether user simply pressed ENTER key that mean he entered nothing and the string length is zero so it's time quit.

Hope that helps.
Regards,

Re: Some script syntax

Steve Steel — Thu, 18 Nov 2004 03:28:55 GMT

Hi

I am not going to repeat the explanations already given but if you need a good source for script info

http://www.shelldorado.com/

Steve Steel