I have data that looks like this
aaa!bbb!ccc/ddd/eee
It is not fixed format. I need to parse ddd into a var in order to decide if I want to process that row. If I do I need to put ccc and bbb into vars to process it. I need to do this during a while loop one record at a time. Any... (11 Replies)
Is there a betterway to cut certain columns in everyline based on positions.
Basically, I have a largefile and eachline is of 1000 characters and I need to cut the characters 17-30, 750-775, 776-779, 780-805
while
do
fptr=`cat $tempfile | head -$i | tail -1`
... (4 Replies)
I have a file with the following format
12g data/datasets/cct 8g data/dataset/cct
10 g data/two 5g data/something_different
10g something_different
5g data/two
is there a way to loop through this... (1 Reply)
Hi,
I'm using awk in HP-UX machine which does not support systime(), strftime(). So to get the date time I was using :
seq 1 100000 | awk ' "date +%Y%m%d%H%M%s" | getline curtime; print curtime }'
However the above code gets the date only once, next time it is not updated. For... (2 Replies)
Hello All,
I am new to shell scripting and programming. I am looking for a guide on how I can parse specific information from a plain text file with thousands of lines. Specifically I need to parse an email address from each line. The line looks something like this:... (9 Replies)
Good afternoon!
I have an XML file from which I want to extract only certain elements contained within each line. The problem is that the format of each line is not exactly the same (though similiar). For example, oa_var will be in each line, however, there may be no value or other... (3 Replies)
Hello,
I want to add a letter to the end of a string if it repeats in a column.
so if I have a file like this:
DOG001
DOG0023
DOG004
DOG001
DOG0023
DOG001
the output should look like this:
DOG001-a
DOG0023-a
DOG004
DOG001-b (15 Replies)
I am executing df -mP to see the disk utilization.
I would like to append servername also to each and every line.
df -mP | awk '{ print $1","$2","$3","$4","$5","$6 }'
trying to add something like this
df -mP | awk '{ print $1","$2","$3","$4","$5","$6","$hostname }' ... (1 Reply)
All,
I have a sample text like below.
Key (Header)
Key1
ABC
Key2
ABC
Key3
ABC
ABC
Key4
ABC
Key5
ABC
ABC
ABC
Required Output
Key (Header)
Key1 (2 Replies)
Another project, another bump in the road and another chance to learn. I've been trying to open gzipped files and parse data from them and hit a snag. I have data in gzips with a place followed by an ip or ip range sort of like this:
Some place:x.x.x.x-x.x.x.x
I was able to modify some code... (6 Replies)
Discussion started by: Azrael
6 Replies
LEARN ABOUT MOJAVE
english5.18
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)