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Full Discussion: how to check files
Top Forums Shell Programming and Scripting how to check files Post 302581225 by Corona688 on Monday 12th of December 2011 11:51:51 AM
Old 12-12-2011
You don't need to use find, ls, grep, or globbing at all. Your use of grep is wrong anyway since grep uses regular expressions, not globbing -- "fileone*" matches "fileon", then one or more e's. and does so anywhere in the line, so "aaaaaafileon" would match "fileone*".

The shell has many operators for use inside [ ] which can be used to check files, directories, or variables in many ways, see man test.

Code:
# Today's date
DATE=$(date +%Y_%m_%d)

for X in fileone filetwo filethree
do
        [ -f "${X}_${DATE}.dat" ] && echo "${X} exists"
done

 

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LEARN ABOUT HPUX

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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