Hi,
I've a question on awk. In English I want to:
(a) open a file, (b) search through the file for records where length of field15 > 20 characters and (c) print out some fields in the record.
I've written the following and it works OK. The trouble is this will ALWAYS write out the column... (5 Replies)
I'd like to define an alias to awk's begin statement since I use awk with different delimiters all the time and it is tiresome to type awk '{OFS="\t";FS="\t"}{BLAH BLAH}' every time. The problem is that bash won't let me make an alias with an open quote, which is necessary for the BEGIN alias to... (3 Replies)
I am beginner in awk
awk 'BEGIN{for(i=1;(getline<"opnoise")>0;i++) arr=$1}{print arr}'
In the above script, opnoise is a file, I am reading it into an array and then printing the value corresponding to index 20. Well this is not my real objective, but I have posted this example to describe... (1 Reply)
Here's the command I'm running:
# echo "hi" | awk '{etime = system("hostname") ; close("hostname") ; print etime""}'
And here's the ouput:
server.domain.tld
0
Why in the world is that second line, the one that's just "0", there? Many thanks in advance. (2 Replies)
I'm new to awk, trying to understand the basics.
I'm trying to reset the counter everytime the program gets a new file to check.
I figured in the BEGIN part it would work, but it doesn't.
#!/bin/awk -f
BEGIN {counter=0}
{
sum=0
for ( i=1; i<=NF;... (1 Reply)
Hi,
I have written below script to begin if the line has n
#!/bin/ksh
/usr/xpg4/bin/awk {/ n / 'BEGIN {X = "01"; X = "02"; X = "03"; X = "04";
X = "05"; X = "06"; X = "07"; X = "08";
X ="09"; X = "10"; X = "11"; X = "12"; };}
NR > 1 {print $1 "\t" $5 "," X "," $6 " " $7}'} input.txt |... (9 Replies)
Hello,
I need a little help with the following:
I'm using AWK to read input from a comma-seperated value file, and only printing certain fields like so:
awk -F "," '{print $1,$3,$6}' /list.csv | tail -1
Which outputs the following:
server1 APPID OS
I run into a problem... (8 Replies)
English(3pm) Perl Programmers Reference Guide English(3pm)NAME
English - use nice English (or awk) names for ugly punctuation variables
SYNOPSIS
use English;
use English qw( -no_match_vars ) ; # Avoids regex performance penalty
# in perl 5.16 and earlier
...
if ($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)