Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)
Hello.
I am a french newbie in unix shell scripting (sorry if my english speaking is wrong).
I have a file with path and filenames in it. I want to limit the number of characters on each line and break the line if necessary. But the "break" should occur after a slash caracter "/".
Example of... (9 Replies)
Hello
I have simple script that will accept as arg string like this :
".../foo/blah/,.../.../foo1/,.../blah"
now perl automatically removes the slashes "/" , I can't escape the slashes in the input I have to control on it
so how can I force perl to not touch this slashes?
Thanks ... (5 Replies)
Hi everyone,
I`ll try to be most clear I can explaining my help request.
I have 2 folders
Folder A-->This folder receives files through FTP constantly
Folder B-->The files from Folder A are unzipped and then processed in Folder B
Sometimes Folder A doesn`t contain all... (2 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
i have two files
t4.txt
para1
para2
t5.txt
34
56
after compiling the following in perl
system("paste t4.txt t5.txt > table.txt");
i am getting o/p as
para1 34
para2 56
but i need o/p as
para1,34
para2,56 (3 Replies)
Hi.
I've had a little mishap.
To cut a long story short, I've accidentally recursively ran chown on a directory (actually a bunch of 'em). Not a problem in itself, but I had a slight error in the code I used to get the list of directories and ended up with a comment in the file ownership.
... (15 Replies)
I have a file that stores data in pairs of lines, following this format:
line 1: header (preceded by ">")
line 2: sequence
Example.txt:
>seq1 name
GATTGATGTTTGAGTTTTGGTTTTT
>seq2 name
TTTTCTTC
I want to filter out the sequences and corresponding headers for all sequences that are less... (2 Replies)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 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)