Append files with gzip

[smkamene]

hello folks, i searched the forum/google but could not anything that could help me. I am trying to append a file to an already existing gzip files. The file is already a tar ball that has been gzipped and i need to append a few more files to it. I know i can append to tar ball but i wanted to see if there was a way to simpy append to the gzip file. Maybe other command line tools beside gzip can do that?

Thanks

[jim]

appears tar has the ability to add files

tar <operation> [options]

Operations:
[-]A --catenate --concatenate
[-]c --create
[-]d --diff --compare
[-]r --append
[-]t --list
[-]u --update
[-]x --extract --get
--delete

Common Options:
-C, --directory DIR
-f, --file F
-j, --bzip2
-p, --preserve-permissions
-v, --verbose
-z, --gzip

[RupertPupkin]

Use bash to roll your own:

#!/bin/bash
TARBALL="$1"
FILETOADD="$2"
gunzip "${TARBALL}"
tar --append --file="${TARBALL%.gz}" "${FILETOADD}"
gzip "${TARBALL%.gz}"

Save the above script in a text file called, say, add2tarball, then do "chmod 755 add2tarball" and put the script somewhere in your PATH.
Run it like this: add2tarball some_tarball .tar.gz some_file_to_add
In other words, the 1st argument to the script is the name of the tarball, the 2nd argument is the file to add.

Obviously the script could be improved (e.g. trapping errors). Also, it would be easy to add a for loop to handle adding more than one file. That would be a good bash exercise.

[smkamene]

yeah, so i guess native gzip does not have an option to append to existing gzip files.