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Help with gunzip in shell script.

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# 1  
Old 02-15-2012
Help with gunzip in shell script.
Hi All,

I'm tweaking a script found online. script gunzips the files in current dir.
My modifications are to check:

1. if the backup already exists, if yes quit else else go on -- this works.
2.once gunzipped file is created, cp it to archive dir and then delete the file in existing dir -- this does not work

here is the error i get:
cp: omitting directory `/home/blah/'
rm: cannot remove `/home/blah/': Is a directory
looks like $GZ is not actually being populated. Can anyone figure out why?

Code:
#!/bin/bash
#  Backs up all files in current directory modified within last 24 hours

BACKUPFILE=backup-$(date +%m-%d-%Y)

if [ -s $BACKUPFILE.tar.gz ]
then
echo "backup already created"
exit 0
fi

#if backup not already created, tar the files.
#all o/p is stored in archive.log file.
archivedir=`pwd`/archive
find . -mtime -1 -type f -print0 | xargs -0 tar rvf "$BACKUPFILE.tar" &>$archivedir/archive.log

GZ=$(gzip $BACKUPFILE.tar)

# move the zipped file to archive directory. Delete the zipped file in current dir.
cp -ip `pwd`/$GZ $archivedir
rm `pwd`/$GZ

exit 0

# 2  
Old 02-15-2012
Unless your version of gzip is very different than mine, with no options gzip shouldn't be writing to stdout and your variable should be empty. You can assume that gzip will add .gz to the original file name, so you could just code

Code:
GZ="$BACKUPFILE.tar.gz"

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