read a
read b
sed -e "s/$a[^$b]*$b/|&|/g" a > temp_a
sed 's/^|//' temp_a > temp_b
nawk -v st=$a -v ed=$b 'BEGIN{
FS="|"
}
{
for(i=1;i<=NF;i++)
{
str=sprintf("b%s",$i)
if(index(str,"a")==2)
{
if(tmp=="")
{
tmp=$i
}
else
{
if (length($i)<length(tmp))
tmp=$i
}
}
}
print tmp
}
' temp_b
hi,
thank you for the code..
but this do not give correct result i.e u have not properly getting my question.
e.g.for input string as "abcdpqracdpqaserd",and first character is "a" and last char is "r",then shortest substring is "aser" and not "abcdpqr"so help me to generate such code..
i am a new user of C-shell script.
I want to know can i create a substring in a string.
That means when i got a variable $input = "it is number 2"
I want to get the "2" to be another variable.
Can i do that in C-shell and how to ?
Thank you so much
dinodash (0 Replies)
hi all, I have read similiar topics in this board, but i didn' t find the posting which is the same with the problem i face.. I try to extract string from the end. i try to do this:
num=abcdefghij
num2=${num:-5}
echo $num2 #this should print the last 5 characters (fghij)
but it doesn;t... (3 Replies)
Hi
I'm new to Shell scripting. Someone please help me in extracting a portion of string from a file.
Eg:
I got a file like, Readme.txt and has the following name value pairs
input1 : /homes/input1/
input2 : /homes/input2/
...
...
When I give the parameter input1, the value... (3 Replies)
please give me proper solution for finding a shortest substring from given string if string itself and first char and last char of that substr are also given by user
if S="dpoaoqooroo" and FC="o" and LC="o",then shortest substr is "oo" and rest of the string is "dpoaoqroo"
i have code but it is... (1 Reply)
Hi All,
This is Ram. I'm new to this forum & new to shell scripts as well. I've a requirement in which I want to extract a substring from a given string based on last occurance of a character.
for eg.
I have a string of a file name with absolute path like... (2 Replies)
I need a help in getting substring of each line in input file.
I am writing a script that will read a file from a directory on daily basis, I mean everyday a new file will be stored in this directory, it will replace old file. I have to read contents of this file, the contents will be as... (5 Replies)
This is the data I am having in a file
Just for sample I have given 3 records. The file which I am having consists of n number of records.
ABC123 10 01/02/2008 2008-01-03-00.00.00.000000
DYUU 22 02/03/2008 2008-01-04-00.00.00.000000
RF33 88 03/05/2008 2008-01-05-00.00.00.000000
... (24 Replies)
hi
i need to name a file with a substring of a another file name.
i.e. if the old filename is abc.txt , the new filename should be abc_1.txt
i should get the substring of the file name and then name the new one
please let me know how to do it (4 Replies)
Hi awk and sed gurus,
Please help me in the following.
I have the following entries in the file
ABCDErules
AbHDPrules
ABCrules
--
--
and other entries in the file.
Now, I want to extract from the file that contain entries for *rules and process it separately.
How can i do it... (6 Replies)
Hi,
I have string in variable like '/u/dolfin/in/DOLFIN.PRL_100.OIB.TLU.001.D20110520.T040010'
and i want to conevrt this string into only "DOLFIN.PRL_100.OIB.TLU.001.D20110520.T040010" (i.e file name).
Is there any command to extracting string in some part ?(rather than whole path)?
... (5 Replies)
Discussion started by: shyamu544
5 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)
11-22-2007
):