I wasn't able to find this exact issue through a forum search, so I hope it is not a repost.
I have a directory of files that all end in ".log", and I would like to grep out something from the most recently created file in the directory without knowing the exact file name (aka I want to just grab the last file, not look at it's name).
So far, I have tried this:
Code:
ls -ltr | tail -1 | grep "Something" *.log
If I do just a ls -ltr | grep -1, it shows the last file like I want, but the grep ends up grepping on all the files in the directory (and there are a crap ton of files), so I guess I am not understanding exactly how the pipe thing works.
This gives me what I want:
Code:
grep "Something" *.log | tail -1
But it is searching every file not just the last one, so it takes forever.
Thanks in advance!
Moderator's Comments:
Code tags for code, please.
Last edited by Corona688; 08-09-2012 at 05:33 PM..
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LEARN ABOUT ULTRIX
zgrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)
08-09-2012
