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Full Discussion: Strange error: grep does not read from file
Top Forums UNIX for Dummies Questions & Answers Strange error: grep does not read from file Post 302557094 by FelipeAd on Tuesday 20th of September 2011 11:33:49 AM
Old 09-20-2011
Quote:
Originally Posted by vbe
I created exactly the files with the given names and content...
So start to see if the cat command part works or check your perms on those files try to give var name using UPPERCASE which will prevent you to having to look for reseved words or aliases...
When i type this
Code:
while read line file1.txt; do echo -e "$line";done

it does not work
when i type this

Code:
cat file1.txt|while read line; do echo -e "$line";done

it does work.

Could this be helpful?

For the other part, you mean to rename the files to uppercase letters?

---------- Post updated at 10:33 AM ---------- Previous update was at 10:31 AM ----------

Quote:
Originally Posted by Abhishek_1984
My mitake instead of grep use egrep

egrep -f test1 test2
angie blond
mary brunnet
susan red


I am getting the requird result.

---------- Post updated at 10:17 AM ---------- Previous update was at 10:15 AM ----------

Hi, instead of grep you have to use egrep

egrep -f test1 test2
angie blond
mary brunnet
susan red

I am getting the required result
Neither the egrep works

---------- Post updated at 10:33 AM ---------- Previous update was at 10:33 AM ----------

Quote:
Originally Posted by vbe
Just wondering...
What key stoke do you use to get the pipe?
Ctrl-1 or Alt GR-7
Sorry, i did not understand what you mean...
 

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LEARN ABOUT REDHAT

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  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  zgrep  is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, zgrep uses
       it as the grep program to be invoked. For example:

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

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)

																	  ZGREP(1)
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