topic Re: Test file size in Operating System - HP-UX

Test file size

Adam Prince — Thu, 20 Dec 2001 15:18:32 GMT

G'day,

I would like to test a file size. If a file is equal to zero or 1 test would fail, and if a file was greater than 1 test would pass. I know there was be an easy way to do this. Thanks everyone for your help.

Re: Test file size

Craig Rants — Thu, 20 Dec 2001 15:21:03 GMT

If I read your question right:

NUM=`ll filename | awk '{print $7}'`
if [ $NUM -gt 0 ]
then
exec command1
else
exec command2
fi

MC,
C

Re: Test file size

Craig Rants — Thu, 20 Dec 2001 15:22:22 GMT

Ooops,

NUM=`ll filename | awk '{print $7}'`
if [ $NUM -ge 1 ]
then
exec command1
else
exec command2
fi

Notice the ge and 1, I did not read it right the first time...

Re: Test file size

Craig Rants — Thu, 20 Dec 2001 15:24:31 GMT

Ok, last time

NUM=`ll filename | awk '{print $7}'`
if [ $NUM -le 1 ]
then
exec command1
else
exec command2
fi

My short term memory is shot today.

HH,
C

Re: Test file size

Justo Exposito — Thu, 20 Dec 2001 15:26:50 GMT

hi,

You can use find -size n[c] try to read the man page of find.

Regards,

Justo.

Re: Test file size

Adam Prince — Thu, 20 Dec 2001 15:38:56 GMT

Thanks for the help Craig!
The routine looks like this:
#!/bin/sh
NUM=`ls -l filename | awk '{print $5}'`
if [ "$NUM" -gt 1 ]
then
echo command1
else
echo command2
fi

Re: Test file size

Chris Vail — Fri, 21 Dec 2001 18:43:44 GMT

Here's an easy way:
SIZE=`ls -l $YOURFILE|awk '{ print $5 }'`
if test "$SIZE" -gt "1"
then
do something
else
do something else
fi

This will fail if the file doesn't exist, however. To test if the file exists AND THEN
test to see if its size is larger than 1 byte:
if test -f YOURFILE
then
insert the above script
fi

Re: Test file size

A. Clay Stephenson — Fri, 21 Dec 2001 21:29:07 GMT

Hi:

You guys are doing it the hard way.

How about
if [ -s myfile ]
then
echo "File exists and has a size greater 0"
else
echo "File does not exist"
fi

Clay

Re: Test file size

Mark Fenton — Sat, 22 Dec 2001 00:10:32 GMT

I'm with you Clay. The other script examples might be more useful if one were testing for a file of arbitrary size, but [ -s filename ] is much simpler.

Re: Test file size

Darrell Allen — Sat, 22 Dec 2001 15:00:40 GMT

Hi all,

Remember the question is whether the file size is greater than 1. Thus, [ -s myfile ] is inadequate as it tests for greater than 0.

:)

Darrell