Sponsored Content
Top Forums Shell Programming and Scripting substr from a string in Shell script Post 302221674 by buffoonix on Tuesday 5th of August 2008 02:28:19 AM
Old 08-05-2008
I think this should rather have been addressed by era,
the herder of Randal's useless use of cat awards?
I would here say, contender for useless use of echo and backticks awardSmilie
Quote:
echo `expr "$stringZ" : '.*'`
But I noticed one difference.
The nifty bash substr expansion seems to start counting chars from naught
(which seems logical to programmers)
whereas the expr substr seems indexing from 1 (which I would say is more Fortran style, if I remember correctly)
Code:
$ str=abcABC123ABCabc
$ echo ${str:5:10}
C123ABCabc
$ expr substr $str 5 10
BC123ABCab

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Trouble using substr function with Bourne shell script

Hi, I'm a newbie to UNIX scripting and I'm having some trouble compiling my script. I'm using the Bourne Shell and cannot seem to use the substr function correctly. I'm trying to extract the last two digits of a year that's stored in a variable based off of a condition. I've searched the... (4 Replies)
Discussion started by: E2004
4 Replies

2. Shell Programming and Scripting

substr() thru awk Korn Shell Script

Hi, I am new stuff to learn substr() function through awk for writing the Korn shell script. Is there a way to copy from XXXX1234.ABCDEF to XXX1234 file names without changing both data files? I appreciate your time to response this email. Thanks, Steve (4 Replies)
Discussion started by: sbryant
4 Replies

3. Shell Programming and Scripting

Substr in shell script

hi, i am using the following script to get the last digit of YEAR OY=`expr substr $YEAR 2 1` it is showing syntax Is this wrong or i need to change anything I am running this in sun solaris unix (7 Replies)
Discussion started by: gjithin
7 Replies

4. Shell Programming and Scripting

How to use substr to return data into a shell script variable?

I'm writing a shell script in which I need to be able to pull a portion of the file name out. I'm testing with the following code: x="O1164885.DAT" y=`ls -ltr *${x}|awk '{print substr($0,3)}'` echo ${x}|awk '{print substr($0,3)}' echo "y="$y I can echo it to the screen just fine but I... (3 Replies)
Discussion started by: ttunell
3 Replies

5. Shell Programming and Scripting

copy substr in existing string in Perl

Any clue to write something to a particular location in Perl? Suppose $line = ‘abc cde 1234” How to write ( example string "test") on location 4 without parsing the whole line. Output should be $line = ‘abctest 1234” this is not search and replace. just to add substring into... (3 Replies)
Discussion started by: jaivipin
3 Replies

6. Shell Programming and Scripting

Help on shell script (string operations)

Hey everyone. So the background of the problem is that the ps3 does not support the mkv container, but DOES support the avi one. Here is the script to convert one file with the name hardcoded in: #!/bin/sh mencoder -oac... (2 Replies)
Discussion started by: wua05
2 Replies

7. UNIX for Dummies Questions & Answers

Comparing a String variable with a string literal in a Debian shell script

Hi All, I am trying to to compare a string variable with a string literal inside a loop but keep getting the ./testifstructure.sh: line 6: #!/bin/sh BOOK_LIST="BOOK1 BOOK2" for BOOK in ${BOOK_LIST} do if then echo '1' else echo '2' fi done Please use next... (1 Reply)
Discussion started by: daveu7
1 Replies

8. Shell Programming and Scripting

How to get the last value from a string in shell script?

I have to get the last value from a string, below is the example string String -> Here is the test string 12233 O/P -> 12233 String -> Hello world 500 O/P -> 500 String -> 300 O/P -> 300 Please help (2 Replies)
Discussion started by: vel4ever
2 Replies

9. Shell Programming and Scripting

Cut string substr

friends as I can cut the first three characters in a string example: 400_FACTURACION_CANJES_20151217.txt Result 400 (2 Replies)
Discussion started by: tricampeon81
2 Replies

10. Shell Programming and Scripting

Substr/Instr in shell script or extract part of text

Hi, I need to extract part of a text to two variables text is "PL/SQL procedure successfully completed. ERROR ----------------------------------------------------------------- Test Error Message PLUSVAR ---------- 1" I want "Test Error Message" in one variable and "1" in another variable.... (11 Replies)
Discussion started by: vedavrath
11 Replies
INSTALLSIEVE(1) 					      General Commands Manual						   INSTALLSIEVE(1)

 *

NAME
installsieve - user utility for managing sieve scripts SYNOPSIS
installsieve DESCRIPTION
installsieve is a utility that allows users to manage their sieve scripts kept on the server. OPTIONS
-v <name> View script with the given name. The script if retrieved sucessfully is output to standard output. -l List all of the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active script. -p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services. -i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten. Upon sucessfully putting the script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since sieve names may not contain a '.'. -a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option.. -d <name> Delete the sieve script on the server with <name>. -m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen. -g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already exists it is overwritten. -u <user> Userid/Authname to use for authentication; by default, the current user. CMU
Project Cyrus INSTALLSIEVE(1)
All times are GMT -4. The time now is 07:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy