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Full Discussion: Recursive find / grep within a file / count of a string
Top Forums Shell Programming and Scripting Recursive find / grep within a file / count of a string Post 302738583 by RudiC on Sunday 2nd of December 2012 04:14:21 AM
Old 12-02-2012
You can do all of that in one line:
Code:
find /pathA /pathB ... /pathN -name "filename" -print0 |xargs -0 awk -F\| 'FNR==1 {print FILENAME, NF}'

This will look into the list of locations for the filename(s) you specified and print them out, separated by a "0"- char. xargs will collect them all and run awk on this list. awk will open each file, and print full path and field count from the first line. Redirect as desired.
As I am not aware of how to skip the remainder of the file and go on to the next one, there is some optimization potential. Trials with close("-") right after the print statement showed a little improvement in execution time, but I'm not sure if it does the right thing. EDIT: It does not; returns -1 error code.
Anybody out there knowing about skipping to the next file in awk's argument list?
Last edited by RudiC; 12-02-2012 at 07:39 AM.. Reason: Tried closing stdin to skip remainder / revoked close ("-")
 

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LEARN ABOUT MINIX

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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