how can i check in csh if command found or not found ?

umen · #1 (**permalink**) 02-25-2007

hello all

im trying to use in sun Solaris the information received from the top command

now i several machines that dont have install the top program so when im running the script im geting error

saying after im running this code :

Code:

set MemoryInfo = `top | grep Memory`
      if ( $status != 1 ) then
        echo $MemoryInfo
      endif


top: Command not found

how can i prevent the printing of any error coming from executing unix application with tcsh ?

matrixmadhan · #2 (**permalink**) 02-26-2007

usually top would be available at /usr/bin/top ( If you are sure, there is no top available, you can leave it )

to supress any error, if you are sure you dont need them for debugging purpose then

Code:

anycommand 2>/dev/null

cfajohnson · #3 (**permalink**) 03-03-2007

Don't use [t]csh for scripting.

http://www.grymoire.com/Unix/CshTop10.txt
http://www.grymoire.com/Unix/Csh.html#uh-0
http://www.faqs.org/faqs/unix-faq/shell/csh-whynot/

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