Hide screen output of UNZIP within shellscript

[barryp]

I need to include

if unzip -t file.zip

in a script to test the structure of a ZIP file before proceeding further

I would like to suppress the output "This is not a zipfile" or whatever but

unzip -t file.zip > null doesn't work

What will ??

 

[DSMARWAY]

If I understand you correctly you don't want anything displayed on the screen when you run your command i.e. suppress standard error and standard out

unzip -t file.zip > /dev/null 2>&1

tr try it individually

unzip -t file.zip 2>/dev/null ( no errors will be displayed)
1>/dev/null ( no results will be displyed)


HTH

 

[barryp]

THANKS

I was confused by the SAME message output to BOTH stdout & stderr
So 1>/dev/null seemed not to work
and 2>/dev/null same
and just unzip -t file.zip just output ONE copy of the error message

Regards