if condition for filesize


 
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# 1  
Old 10-12-2010
if condition for filesize

Hi,

I want to check file size in unix, based on file size I am going to execute appropriate command.

I tried below, but getting the error.

System details –

Machine hardware: sun4u
OS version: 5.9

Code:
if ( -s $f1 ) then
  echo "filename exists and is > 0 bytes"
else
  echo "filename does not exist or is zero length"
fi

Error - if: Badly formed number

Thankx

Last edited by Scott; 10-12-2010 at 08:22 AM.. Reason: Please use code tags
# 2  
Old 10-12-2010
using bash:-


Code:
[[ -s $f ]] && echo "filename exists and is > 0 bytes" || echo "filename does not exist or is zero length"

SmilieSmilieSmilie
# 3  
Old 10-12-2010
thankx for reply.

but i am getting "filename does not exist or is zero length" even though file is present

Code:
Code:
#!/bin/csh
#######################
setenv UPDLOG /data/updlog
setenv f1 /data/FILING.txt

[[ -s $f1 ]] && echo "filename exists and is > 0 bytes" || echo "filename does not exist or
 is zero length"
echo "*****Hello there, you are about to run Update.  ****** "
echo ""
echo    "End Load --->" `date` >> $UPDLOG/upd.log
####################### THE END ##################################

Thankx

Last edited by Franklin52; 10-12-2010 at 08:35 AM.. Reason: Please use code tags
# 4  
Old 10-12-2010
you are using csh!!!! and post below for bash shell, so use below:-


Code:
[  -s  $f  ] && echo "filename exists and is > 0 bytes" || echo "filename does not exist or is zero length"

# 5  
Old 10-12-2010
when used -

Code:
[  -s  $f  ] && echo "filename exists and is > 0 bytes" || echo "filename does not exist or is zero length"

got -

Missing ]
filename does not exist or is zero length
# 6  
Old 10-12-2010
try test command:-

Code:
test -s  $f  && echo "filename exists and is > 0 bytes" || echo "filename does not exist or is zero length"

# 7  
Old 10-12-2010
Code:
$ ./justdoit filename

Code:
## justdoit ##
#!/bin/csh
set f1="$1"
if ( ! -e $f1 ) then
  echo "file does not exist "
  else
   if ( -z $f1 ) then
    echo "file is exist and file size is zero"
    else
  echo "file is exist and file size is > 0 bytes "
   endif
endif

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