help checking tar packages

[rituraj.goswami]

well, i get a lot of tar and gzip packages from my client and i have to run scripts on them. some times the tar or gzip packages are corrupt. can anyone tell me how to check the tar or gzip packages for errors.

[vsemaska]

Well for tar I would use the -t option to produce a list redirecting the output to /dev/null. Then check return code $?. If it's non-zero then there's a problem.

tar -tf /path/to/tarfile > /dev/null
if [ $? -ne 0 ]; then echo "Problem"; fi

For gzip files I would use gunzip to uncompress the file again redirecting the output to /dev/null.

gunzip < /path/to/gzipfile > /dev/null
if [ $? -ne 0 ]; then echo "Problem"; fi