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Full Discussion: File exists or not
Top Forums UNIX for Beginners Questions & Answers File exists or not Post 303017142 by RudiC on Thursday 10th of May 2018 04:54:22 AM
Old 05-10-2018
Quote:
Originally Posted by grvk101
Dear RudiC,

The command used is in a single line continuation and not in new line.
Why, then, don't you show it accordingly in post#1? We again can see that careless posting leads to confusion and in vain efforts in subsequent postings.

Quote:
When I search for pattern 123456789 and is found, it sends the filename
and timestamp of file creation to file var2.txt. This is working absolutely fine,
Difficult to believe. man gzgrep:
Quote:
DESCRIPTION
Gzgrep is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.
man grep:
Quote:
-l, --files-with-matches
Suppress normal output; instead print the name of each input file
No timestamp mentioned . . .


Quote:
however when the pattern is not found, it sends a blank statement to ls -lrt command which in turn runs a blank ls -lrt command and sends all the file details to var2.txt folder.
All I want is to skip the 2nd part if a file is not found and send me a message as file is not found
So you need a different approach, e.g. running the gzgrep statement independently, evaluate its result, and then run the ls -l command with an adequate parameter list.
 

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LEARN ABOUT SUNOS

gzfgrep

GZGREP(1)						      General Commands Manual							 GZGREP(1)

NAME

       gzgrep, gzegrep, gzfgrep - search possibly compressed files for a regular expression

SYNOPSIS

       gzgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       gzgrep is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.  If no file is speci-
       fied, 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  gzgrep  is  invoked as gzegrep or gzfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, gzgrep
       uses it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	gzgrep string files
	   for csh: (setenv GREP fgrep; gzgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), egrep(1), fgrep(1), gzdiff(1), gzmore(1), gznew(1), gzforce(1), gzip(1), gzexe(1)

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWgzip	      |
       +--------------------+-----------------+
       |Interface Stability | External	      |
       +--------------------+-----------------+
NOTES

       Source for gzip is available in the SUNWgzipS package.

																	 GZGREP(1)
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