Sponsored Content
Full Discussion: ##*_ - whats this?
Top Forums Shell Programming and Scripting ##*_ - whats this? Post 302264588 by Autocross.US on Thursday 4th of December 2008 09:15:22 AM
Old 12-04-2008
They are pattern matching arguments used to strip off certain portions of a string from either the front or end of the string.

Example:
Code:
$ >  STRING=this_test_string
$ >  echo ${STRING##*_}
string

$ >  DIR=/home/user1/test
$ > echo ${DIR##*/}
test

 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Whats does this mean

Found this piece of code written in ksh. I have no ideas what do the stuff like ${SRF##*\.} do. SUFFIX=${SRF##*\.} if ; then SUFFIX="" fi I have encountered similar expressions in other programs also. Any pointers on where to learn more about these... (1 Reply)
Discussion started by: jyotipg
1 Replies

2. Post Here to Contact Site Administrators and Moderators

Whats the go?

woofie, Your posts are being deleted because your use of profanity. I am close to changing your status to read only. In fact, if you argue with the mods again, I will ban you from these boards. Neo (1 Reply)
Discussion started by: Neo
1 Replies

3. What is on Your Mind?

Whats Behind Your Name?

Looking at the member list, there are alot of interesting names, some unique, some bizarre, and some that are just plain. How did you come by your name? Why did you choose your label? Me? Well, I wish I could change mine. I chose Google because thats how I stumbled upon this site. I wasn't sure... (66 Replies)
Discussion started by: google
66 Replies

4. Shell Programming and Scripting

whats the difference between $* and $@

Hi, whats the difference between $* and $@ in command line arguments to a shell scripts (3 Replies)
Discussion started by: pbsrinivas
3 Replies

5. Shell Programming and Scripting

tell me whats wrong in this?

#! /bin/bash head -5 $1 echo "remove $1 ?" read answer if then echo invalid answer elif rm $1 echo "$1 is deleted" elif then echo file is not deleted else echo "invalid answer" fi What i really want this to do is to ask to delete the file or not..it says something wrong... (1 Reply)
Discussion started by: nadman123
1 Replies

6. Shell Programming and Scripting

tell me whats wrong with this

#! /bin/bash USAGE=" | ] if then echo "$USAGE" exit 1 fi while getopts lb: OPTION do case $(OPTION)in a) echo Hi there! exit 2;; b) echo hello o) OARG=$OPTARG;; \?)echo "$USAGE" ;; exit 2;; esac done shift `expr... (1 Reply)
Discussion started by: nadman123
1 Replies

7. Shell Programming and Scripting

whats this NAME=${0##*/}

hi all, i found NAME=${0##*/} in a script. i given this coomand in my unix box(presently in ksh). echo ${0##*/} it returned ksh. the purpose of the above is to return the shell name or more than that. do you have any more information like this, please share with me. one more query... (7 Replies)
Discussion started by: Arunprasad
7 Replies

8. UNIX for Dummies Questions & Answers

whats wrong with this?

can anyone tell me why this code doesn't work how its supposed to, its the hangman game but it doesn't play how its supposed to #!/bin/bash NoAttempts="0" livesgiven="5" LivesRemain=$livesgiven LettersAttempted="" wordfile=words numwords=0 function menu() { clear cat << menu... (1 Reply)
Discussion started by: ferrycorsten73
1 Replies

9. Homework & Coursework Questions

Whats wrong with the following

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: ls -ld htdocs drwxr-x--- 3 root root 8192 2006-11-19 10:41 htdocs How would a host administrator... (1 Reply)
Discussion started by: Larry_1
1 Replies
platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME
platform::shell - System identification support code and utilities SYNOPSIS
package require platform::shell ?1.1.4? platform::shell::generic shell platform::shell::identify shell platform::shell::platform shell _________________________________________________________________ DESCRIPTION
The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell. This package allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only requirement is that the other shell (identified by its path), is actually executable on the current machine. While for most platform this means that the architecture of the interrogated shell is identical to the architecture of the running shell this is not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run 32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers. For applications like a code repository it is important to identify the architecture of the shell which will actually run the installed packages, versus the architecture of the shell running the repository software. COMMANDS
platform::shell::identify shell This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell. platform::shell::generic shell This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell. platform::shell::platform shell This command returns the contents of tcl_platform(platform) for the specified Tcl shell. KEYWORDS
operating system, cpu architecture, platform, architecture platform::shell 1.1.4 platform::shell(n)
All times are GMT -4. The time now is 10:49 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy