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Full Discussion: 'sed' command shows extra line
Top Forums Shell Programming and Scripting 'sed' command shows extra line Post 302398044 by soleil4716 on Tuesday 23rd of February 2010 05:47:38 PM
Old 02-23-2010
'sed' command shows extra line
Here is an interesting problem that I am seeing when using 'sed'. The goal
is to print out the names of the Oracle SID's on a system and here is the
command I am using:

Code:
ps -ef|grep ora|grep pmon|awk '{print $NF}'|sed 's/ora_pmon_//'

The output of the command after the awk is this:

Code:
$ ps -ef|grep ora|grep pmon|awk '{print $NF}'
ora_pmon_test1
ora_pmon_devel1
ora_pmon_devel2

After this the 'sed' command is supposed to replace 'ora_pmon_' with
empty string so that we get:

test1
devel1
devel2

Unfortunately, in addition to doing this, it is also adding one extra line in
the output:

test1
devel1
devel2
s///

I am running this on an AIX system. Anyone has any idea why the extra 's///'
is showing up?

Thanks.
 

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LEARN ABOUT V7

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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