bzegrep

Search for an extended regex pattern in a bzip2 compressed file

$ bzegrep "[pattern]" [path/to/file.bz2]

$ bzegrep -i "[pattern]" [path/to/file.bz2]

$ bzegrep -n "[pattern]" [path/to/file.bz2]

$ bzegrep "[pattern]" [file1.bz2] [file2.bz2]

$ bzegrep -c "[pattern]" [path/to/file.bz2]

$ bzcat [path/to/file.bz2] | bzegrep "[pattern]"

bzegrep [egrepoptions] [**-e**] pattern [filename..._]

bzegrep searches possibly bzip2-compressed files for lines matching an extended regular expression pattern. It transparently decompresses .bz2 files before searching and passes all options directly to egrep.
If no file is specified, bzegrep reads from standard input, decompressing if necessary. This allows it to be used in pipelines with other bzip2 utilities.
The command is equivalent to running bzgrep but using egrep (extended grep) for pattern matching, supporting extended regular expression syntax including +, ?, |, and parentheses for grouping.

All egrep options are supported, including:
-i

Case-insensitive matching

Print line numbers

Print only a count of matching lines

Invert match (show non-matching lines)

Print only filenames containing matches

Specify the pattern (useful if pattern starts with -)

The GREP environment variable can be set to specify an alternate grep program. The file must be bzip2-compressed for transparent decompression; uncompressed files are searched directly.

bzgrep(1), bzfgrep(1), egrep(1), bzip2(1), bzcat(1)