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# 1  
Old 09-17-2009
Script writing problem

Self professed idot looking for help
LOL

Hi all, I am new to Unix and I have to write a shell script that will check to see if a file exist and then create it if it does not. The file I need to search for is titled "A1. dat" and here is my feeble attempt at creating the script:

#!/bin/bash

A1=”A1.dat”
for Al in .dat
do
if [ -f $Al]
then
echo “file $Al does exist”
else
echo “ file $Al does not exist”
echo “creating file $Al”
touch $Al
fi
done
# 2  
Old 09-18-2009
you are doing stuffs on a single file. hence you dont need for loop.

second, remember to put space on the both side of "[" and "]".
Code:
A1=”A1.dat”
do
if [ -f "$Al" ]
then
echo “file $Al does exist”
else
echo “file $Al does not exist”
echo “creating file $Al”
touch $Al
fi

if you also want to check for file size greater than zero, you can use -s flag instead -f.
# 3  
Old 09-18-2009
Thank you sooooooo very much! Smilie

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