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Full Discussion: Binary line being inserted while truncating a file
Top Forums UNIX for Dummies Questions & Answers Binary line being inserted while truncating a file Post 302353256 by akshay61286 on Tuesday 15th of September 2009 02:32:09 AM
Old 09-15-2009
Binary line being inserted while truncating a file
Hi All,

I have a ln between two files (say ln a b), when i truncate file " b ", this truncates file " a " also, a binary line is being added as the first line of both the files.

This is causing problems with other scripts which grep on the above files.

(though i can work my way around by using grep -a)

Can anyone comment why the binary line is being added.

Thanks in anticipation

Akshay
 

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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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