UNIX for Dummies Questions & Answers

Hi all,
i have a gzipped file. <file_name>.gz . when i try gunzip this file i get,
invalid compressed data--format violated

this file gzipped like

Code:

gzip -f -S  <file_name> 2 > <error_log_file>

there is no error in log. it seems that the file gzipped properly. how this

happen ? it is possible that gzipped file correpted in os level ?

My boss does not meet this problem again. i want to ask that, is there a verify option in gzip-gunzip to sure the file gzipped properly.

thanks for answers

If I run the command as you gave it, I'm getting an error:

Code:

$ gzip -f -S test.file 2 > error_log
gzip: 2: No such file or directory

Probably because you -S option is missing an argument, and you've put a space between the '2' and the angle bracket, which means you're not redirecting stderr as expected.

Try writing it as

Code:

gzip -f -S'' get_size.test 2> error_log

Thanks but, actually, this problem happened once. primarily, i want to ask that a verify option for gzip-gunzip ?

Use the '-t' option described in the gzip manpage. The status will be in $?.