Hi ,
I have a piece of code ...wherein I need to assign the following ...
1) A command line argument to a variable
e.g origCount=ARGV
2) A unix command to a variable
e.g result=`wc -l testFile.txt`
in my awk shell script
When I do this :
print "origCount" origCount --> I get the... (0 Replies)
Hi all,
I am new to awk.
I want to print the line numbers if the column has a particular value.
For example I have:
cat FILE1
COL1 COL2
X114 0
X116 0
X117 0
X120 0
X121 0
X125 0
X126 0
X127 0
X131 1
X132 0
X135 0
X136 0 (3 Replies)
Hello. I am learning how to use Unix through an online course. Unfortunately the text that we use isn't very good, so I could use some help with a pretty basic question.
Use metacharacters and the ll command to list all filenames under the datafiles directory that contain a dot "." with the... (2 Replies)
Hi, Im trying to get current line in the AGREP command I use in AWK. My script looks like this:
list.txt
car
bus
checklist.txt
cer
buss
cat list.txt | awk -v mycmd="$(agrep -2 -i $0 checklist.txt)" '{print $mycmd}'
It doesnt work. How can I get the current line in the $0... (6 Replies)
I have a file which contains a list of paths separated by a new line character.
e.g
/some/path/to/a/file.png
/some/path to/another/file.jpeg
/some path/to yet/another/file
Notice that these paths may contain metacharacters, the spaces for example are also not escaped.
If I wanted... (5 Replies)
Can I use awk to search for a string, passed from the shell, that might include metacharacters?
File1 entries: Bob Marley Jammin (Bonus Track).mp3
File2 entries: Bob Marley Jammin (Bonus Track).mp3 32000 /Music/Bob Marley/ Jammin (Bonus Track).mp3
So far, I have this;
$ sed -e... (9 Replies)
Hi all,
As of now am using an awk command to check the number of columns in a file that has 10 lakh rows.
Is it possible to remove that particular line having an extra column and copy the remaining lines to a new file ?
YOUR HELP IS HIGHLY APPRECIATED. THANKS IN ADVANCE (5 Replies)
My input file gfile values is CTRY=GM&PROJTYPE=SP&PROJECTTYPE=Small+Project
If i am giving PROJECTTYPE then it must give Small Project
awk -F"&" '{for (i=1; i<=NF; i++) if ($i ~ "^"PAT) {sub ("^"PAT"=", "", $i); sed 's/'+'/""/' $i ; print $i }}' PAT=$1 ... (6 Replies)
Hi,
I am trying to pass awk field to a command line executed within awk (need to convert a timestamp into formatted date).
All my attempts failed this far.
Here's an example.
It works fine with timestamp hard-codded into the command
echo "1381653229 something" |awk 'BEGIN{cmd="date -d... (4 Replies)
As per requirement if column 2 is NULL then 'N' ELSE 'Y'.
I have written below awk code. But it is not replacing values for first line. :confused:
cat temp.txt
1|abc|3
1||4
1|11|c
awk -F'|' '{if($2==""){$2="N"}else{$2="Y"} print $0 } {OFS="|"} ' < temp.txt
1 Y 3 ... (4 Replies)
Discussion started by: max_hammer
4 Replies
LEARN ABOUT MOJAVE
english
English(3pm) Perl Programmers Reference Guide English(3pm)NAME
English - use nice English (or awk) names for ugly punctuation variables
SYNOPSIS
use English;
use English qw( -no_match_vars ) ; # Avoids regex performance penalty
# in perl 5.16 and earlier
...
if ($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)