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Shell Programming and Scripting
zcat two files
Post 302710405 by Corona688 on Thursday 4th of October 2012 11:46:16 AM
10-04-2012
Quote:
I hadn't believed gzip would be capable of this -- gz file essentially has to catch the file starting over -- but it certainly appears to work.
This trick also works with bzip2, xz, and lzop ( though the latter warns about a multipart file ) -- but not with p7zip, lzma, or old-fashioned compress.
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LEARN ABOUT OSX
xzgrep
XZGREP(1) XZ Utils XZGREP(1) NAME
xzgrep - search compressed files for a regular expression SYNOPSIS
xzgrep [grep_options] [-e] pattern file... xzegrep ... xzfgrep ... lzgrep ... lzegrep ... lzfgrep ... DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), bzip2(1), or lzop(1). All options specified are passed directly to grep(1). If no file is specified, then standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1), bzip2(1), and lzop(1) compressed files are not supported. If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze- grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils. ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1). SEE ALSO
grep(1), xz(1), gzip(1), bzip2(1), lzop(1), zgrep(1) Tukaani 2011-03-19 XZGREP(1)