bzgrep

TLDR

Search in compressed file

$ bzgrep ["pattern"] [file.bz2]

Case-insensitive search

$ bzgrep -i ["error"] [log.bz2]

Count matches

$ bzgrep -c ["pattern"] [file.bz2]

Show line numbers

$ bzgrep -n ["pattern"] [file.bz2]

SYNOPSIS

bzgrep [grep-options] [pattern] [file...]

bzgrep searches for patterns in bzip2-compressed files without decompressing them to disk. It's a wrapper around grep that transparently handles .bz2 files.
The tool provides the same functionality as grep but for compressed files.

PARAMETERS

Supports standard grep options:
-i

Case-insensitive search

-v

Invert match

-n

Show line numbers

-c

Count matches

-l

List matching files

-H

Print filename

-h

Suppress filename

RELATED COMMANDS

bzegrep

Extended regular expressions (grep -E)

bzfgrep

Fixed strings (grep -F)

WORKFLOW

$ # Search for pattern
bzgrep "error" logfile.bz2

# Case-insensitive
bzgrep -i "warning" logfile.bz2

# Multiple files
bzgrep "pattern" *.bz2

# With context
bzgrep -C 3 "error" logfile.bz2

# Count occurrences
bzgrep -c "error" logfile.bz2

CAVEATS

Slower than searching uncompressed files. Must decompress entire file to search. Cannot use grep's parallel features. Limited to bzip2 files only.

HISTORY

bzgrep has been part of the bzip2 utilities since the suite's creation in 1996.