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Full Discussion: Tail -f | grep > output.txt
Top Forums UNIX for Dummies Questions & Answers Tail -f | grep > output.txt Post 302928698 by LaUs3r on Sunday 14th of December 2014 11:56:21 AM
Old 12-14-2014
Question Tail -f | grep > output.txt
hi guys,

I perform a sort of monitoring. I have a server running and with
Code:
tail -f | grep "Searchstring"

I monitor the log-file for recent specific entries. This is ok and works fine.

Now, in addition I want to have my search results not posted into the shell but into a file. I tried:
Code:
tail -f | grep "Searchstring" > output.txt

Code:
tail -f | grep "Searchstring" >> output.txt

Code:
tail -f  > output.txt

works but has no "grep" statement.

Would be very nice if you could help me out.
thx in advance
Last edited by LaUs3r; 12-14-2014 at 01:07 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)
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