How do you search for strings in a file which in turn is in an archive?

Question

I search through a number of files for a particular string by pipelining 'grep' and 'find' commands.

Now, I have some 10 zip files each of which has archived a lot of text files. Is there any way I could search for a string in all text files archived in all those zip files without extracting the zip files?

Answer 1

if you are on ubuntu, you could use

unzip -c \*.zip |grep yourtext

You could use some regexes in the grep command to finetune the string matching

hope this helps

Cheers/Raj K

EDITED A better tool here would be zgrep based on comments below

Answer 2

You can also use zipgrep command that is included with unzip package. For example:

for z in *.zip ; do zipgrep PATTERN $z |sed "s/^/$z: /" ; done

This command gives you matched file names inside the archives as well.

Answer 3

Mount the archives as directories using AVFS or fuse-zip. Both are FUSE filesystems.

AVFS provides a view of the filesystem in ~/.avfs where every archive file has an associated directory with the same name plus a # at the end.

mountavfs
grep -r PATTERN ~/.avfs/$PWD/*.zip\#/
…
unmountavfs

Fuse-zip mounts a zip onto a directory.

for z in *.zip; do mkdir "$z.d" && fuse-zip "$z" "$z.d"; done
grep -r PATTERN *.zip.z/
…
fusermount -u *.zip.d
rmdir *.zip.d