The $1,$2 is a piece of awk code.
You cannot run a string (as assigned to an awk variable) as awk code.
(Unless there were an eval built into awk.)
This following awk code interprets a given string as you intend:
Last edited by MadeInGermany; 11-18-2013 at 06:36 AM..
This User Gave Thanks to MadeInGermany For This Post:
Hi,
Some part of output:
================
$ hwmgr show scsi
SCSI DEVICE DEVICE DRIVER NUM DEVICE FIRST
HWID: DEVICEID HOSTNAME TYPE SUBTYPE OWNER PATH FILE VALID PATH
-------------------------------------------------------------------------
68: ... (10 Replies)
Dear All
On my Linux server, I need to separate the individual logs coming from various modules concurrently. Please find below a sample of the logs:
But when I run it, I am receiving the following error:
-bash: -f1.log : command not found
-bash: $LOGFILE : ambiguous redirect
Can you... (4 Replies)
Hi all,
some small script with eval turned me to crazy.
my OS is linux
Linux s10-1310 2.6.16.53-0.8.PTF.434477.3.TDC.0-smp #1 SMP Fri Aug 31 06:07:27 PDT 2007 x86_64 x86_64 x86_64 GNU/Linux
below script works well
#!/bin/bash
eval ssh remotehost date
eval ssh remotehost ls
below... (1 Reply)
Hi
I am trying to remove duplicates on keys in a file and so far the below seems to work
sort -t\| -k2,4 input.txt| awk -F'|' '{if (NR==1) print $0} {x=$2 $3 $4} NR>1 {if ($2 $3 $4 != y) {print $0}} {y=x}'
and now I want to pass comma seperated column number list to the script and use... (3 Replies)
I want to do 2 things in single line that is evaluating a command to get return code and store $2 of awk if the command exit code is 0.
eval "ade desc ${filename}@@/<branch_name> | grep Version | awk '{print $2}' 2>&1 1>/dev/null"
ret=$?
echo "$ret $val"
if
then
... (3 Replies)
Discussion started by: ezee
3 Replies
LEARN ABOUT MOJAVE
english
English(3pm) Perl Programmers Reference Guide English(3pm)NAME
English - use nice English (or awk) names for ugly punctuation variables
SYNOPSIS
use English;
use English qw( -no_match_vars ) ; # Avoids regex performance penalty
# in perl 5.16 and earlier
...
if ($ERRNO =~ /denied/) { ... }
DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get
triggered just by accessing them (like $0) will still be affected.
For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be
referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module.
See perlvar for a complete list of these.
PERFORMANCE
NOTE: This was fixed in perl 5.20. Mentioning these three variables no longer makes a speed difference. This section still applies if
your code is to run on perl 5.18 or earlier.
This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters
in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing
use English qw( -no_match_vars ) ;
. It is especially important to do this in modules to avoid penalizing all applications which use them.
perl v5.18.2 2014-01-06 English(3pm)