Oh its not my day for syntax...
cat gzipsize.txt | awk '{print "echo",$1,$2} > master.txt
I have read a lot about the awk -v but haven't been able to get it to work. I have a variable in my script and I'm looking just to push it into the awk after the $2 (or anywhere would do)!!!
Every... (11 Replies)
Dear Folks,
I have a command output something like:
And I want to store PIN0 and SIG0 in two shell variables, now I do a double awk:
PIN=`gsmctl -d /dev/ttyS0 pin sig | awk '/PIN0/ { print $2}'`
SIG=`gsmctl -d /dev/ttyS0 pin sig | awk '/SIG0/ { print $2}'`
It's possible to... (4 Replies)
Hello,
I wonder if it is possible to pass and use variables from shell environment into sed or awk. I am trying to achieve something similar to the following using sed or awk:
var=some_regular_expression
grep "$var" filename # Will extract lines from filename
The following code,... (3 Replies)
meas is a shell variable, and this works perfectly fine for me:
awk -v var=$meas -F, '$1==var' /abcd/efgh.txt > temp1.csv
However, i want to introduce another shell variable, named, defnfile in the statement, in place of hardcoded path for efgh.txt like:
awk -v var=$meas -F, '$1==var'... (3 Replies)
Hello, I've been trying to figure out how to use variables inside the AWK command and use it back in the korn shell sript.
in my script I have lots of awk commands like this
grep Listen /etc/ssh/sshd_config | \
awk '{ if ($2 == "22" ) print "OK";
else print "not OK"
}'
... (3 Replies)
I apologize if this topic has been beaten to death here, but my limited searching skills did not throw up any results.
Here's what I am trying to accomplish
List all the files in a certain directory; assign the file names to an array which will be used later in the script.
My script looks like... (2 Replies)
Hello everybody:
I want to replace any field $2 of any file line (f.i. test.txt) matching $1 with a shell variable.
$ cat test.txt
F 0
B A
H -12.33
Now I'm going to ask the value of variable B:
$ SEARCHVAR=B
$ OLDVAL=$(awk -v SEARCHVAR="$SEARCHVAR"... (4 Replies)
Hello,
I have two files File1 & File2.
File1
76 135
136 200
250 345
....
File2
1 24
1 35
1 36
1 72
....
I want to get all the values form File2 corresponding to the range in File 1 and feed it to a program. Is the code below right? Can I pass shell variables to awk in this... (2 Replies)
Hi.
I need to parse file and assign some values to variables, right now i do like below
MYHOMEDIR=`awk '/Home/ {print $NF}' output.txt`
MYSHELL=`awk '/Shell/ {print $NF}' output.txt`
PRGRP=`awk '/Primary/ {print $NF}' output.txt`
SECGRP=`awk '/Second/ {print $NF}' output.txt`
In this... (10 Replies)
Hi All,
I have a file which I am reading and looking for "EXIT" statement. I want to insert ":JCWPROD" after each EXIT statement only if ":JCWPROD" doesn't exist.
Here is the sample file :
EXIT
Testing
EXIT
tesing123
EXIT
Desired file :
EXIT
:JCWPROD
Testing
EXIT
:JCWPROD... (7 Replies)
Discussion started by: nua7
7 Replies
LEARN ABOUT MOJAVE
english
English(3pm) Perl Programmers Reference Guide English(3pm)NAME
English - use nice English (or awk) names for ugly punctuation variables
SYNOPSIS
use English;
use English qw( -no_match_vars ) ; # Avoids regex performance penalty
# in perl 5.16 and earlier
...
if ($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)