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# 1  
Old 10-13-2009
test file empty
hi,

I test number on a file, but I have a problem when my file is empty, because the test isn't realized , do you have a idea to realize treatment when file is empty

my test script shell

VALUE=5000
for i in `cat /tmp/list | awk ' FS="|" { print $2 } '`
do
if [ "${i}" -eq "${VALUE}" ]
then
echo titi
else
echo toto
fi
done
# 2  
Old 10-13-2009
Code:
VALUE=5000
if [  -s /tmp/list ]
then
     for i in `cat /tmp/list | awk ' FS="|" { print $2 } '`
     do
        if [ "${i}" -eq  "${VALUE}" ]
        then
             echo titi
        else
              echo toto
        fi
    done 	
else
           echo "ERROR in file </tmp/list"
           exit 1
fi

# 3  
Old 10-13-2009
thanks

---------- Post updated at 05:54 AM ---------- Previous update was at 05:23 AM ----------

it's possible to analyse a non-null file, and a file with a line without character or information ?
# 4  
Old 10-13-2009
You can just use the appropriate "test" option like:
Code:
if [[ ! -s $file ]]; then
     echo "file does not exist or is size 0"
fi

From man page of "test"
Quote:
-s FILE
FILE exists and has a size greater than zero
If you need more precise things on regular expressions you could use grep, egrep or grep -E and check it's exit code ($?) or instead use awk or or ... whatever you want to do.

There are lots of other options that might come handy.
# 5  
Old 10-13-2009
i'm not sure understand you

Code:
name_file="the_nameOfFile"

if [ -f ${name_file} ]
then
     echo "${name_file}: exist"
     if [ -s ${name_file} ]
     then
           echo "${name_file}:exist and is not empy"
     else
           echo "${name_file}:exist and is empty"
     fi
else
           echo "${name_file}:NOT exist"
fi

use:
Code:
    man test

to see all the options for the conditional sentencies for files.
# 6  
Old 10-13-2009
sorry, i 'm not very precise

if
>cat /tmp/list
200O|1000

> cat test_i.sh
VALUE=5000
for i in `cat /tmp/list | awk ' FS="|" { print $2 } '`
do
if [ "${i}" -eq "${VALUE}" ]
then
echo titi
else
echo toto
fi
done

If i execute test_i.sh

> ksh -x test_i.sh
+ alias ll=/usr/bin/ls -l
+ VALUE=5000
+ cat /tmp/list
+ awk FS="|" { print $2 }
+ [ 1000 -eq 5000 ]
+ echo toto
toto

If i empty file /tmp/list

>cat /tmp/list
>ksh -x test_i.sh
+ alias ll=/usr/bin/ls -l
+ VALUE=5000
+ cat /tmp/list
+ awk FS="|" { print $2 }

My need --> I would like that script make echo toto if i have anything on my file /tmp/list


thanks you for your help
# 7  
Old 10-13-2009
hope this help you:

Code:
VALUE=5000
file=/tmp/list

#validate if file exists and is not empty file
if [ -s ${file} ]
then
   for i in `cat ${file}| awk ' FS="|" { print $2 } '`
   do
    if [ "${i}" -eq "${VALUE}" ]
    then
      echo titi
    else
      echo toto
    fi
   done
else
   #this means: the file not existe or is empty
    echo toto
fi
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