Shell Programming and Scripting

Hi,
I am having a problem with a shell script. I am working in a solaris environment.

I am using PGP(Pretty Good Privacy) for encrytping a file. It works on a file(.npgp in this case) and makes an .asc file (ASCII armored file)

The situation is like this. A user logs into a web site and enters his log on information. This process creates a file (.npgp) on the Unix box.The naming convention of the file is USERNAME_DDMMYYHHMISS.npgp

Now my problem is that how can I make sure that when I access the .npgp file, I am accessing the one pertaining to the current user and also that I am not removing some other users .npgp file.

For instance, lets say a user TEST logs at 11:45:51 PM. This process would create a file called TEST_090402114551.npgp
Lets say another user logs at 11:45:52 PM.This process would create a file called TEST_090402114552.npgp

Now I dont want that when the pgp command runs and when I remove the .npgp file the second file also gets removed.

The following shell script keeps on running in the background.

#!/bin/ksh

OUTDIR="/u02/file_out1"
OUTLOG="$OUTDIR/hotspot.log"

export OUTDIR
export OUTLOG

while true

do
#Check for the existence of a *.npgp file.
if [ -e $OUTDIR/*.npgp ]
then
#If it is there, run the following PGP command and remove it.
# Currently it will remove all the .npgp files.
pgp -eat +force *.npgp 2>$OUTLOG
rm -f *.npgp
fi
sleep 1
done

exit 0


What would be good is that if somehow I store the .npgp file name in a variable and remove only that file. Also that if a number of .npgp files in this directory, this command is run one by one for each .npgp file before deleteing that file?

Any help or suggestions would be greatly appreciated?

Hi there. If I understand your question correctly, I would use a "for" loop for this.
Check the for man page, but it would go something like this:

for namevariable in *.npgp
do actions # for example, rm $variable
done

Thanx for your answer, kristy.

What would be the best way to store the *.npgp file names in variables and calling them one by one?

natty, I believe the for-loop provided by kristy is the answer you seek. It provides all the filenames, one by one, into the specified variable name for processing on each loop:

Code:

for fname in *.npgp
do
   echo "Processing $fname ..."
done

Got it.

Thanx a ton for your help.