command in bash script to check if tar is currupt or not

[expresstom]

As part of my script I need to compress a 50Gb file. but I need to check that the compressed is not corrupt if it is ok it will then send it over if not it will report an error. I really don't have a clue how how to achieve that could some help please

cd /home/ops/Desktop/temp
tar czvf backup-"$(date +%d-%b-%y)".tgz /home/ops/Desktop/temp

I need some here to check the compress file then somelike if the file is
if
send the file
else
send an e-mail reporting a failure

Thanks
Tom

[jkleinj]

You can use the return value of 'tar'.
The following code is from a Perl script that performs this type of error check:

$state = `tar -zcvf ./$name.tgz $dir > ./$name.log 2>&1`;
if (! $state) { `cp ./$name.tgz $target`; }
else { printf ("Warning: tar returned error code %d!\n", $state); }

Just adapt that to the 'bash' syntax.

[abhijeet]

do 1 thng.....
check if the compression is done or not, and if done ,by how many percentage
thn open the file not by cat to see if the compression is successful or not