Could anyone help explain this? Post: 302343403

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1. Shell Programming and Scripting

please explain this

zsh 4.3.4% cat file ACFCFACCACARCSHFARCVJVASTVAJFTVAJVGHBAJ zsh 4.3.4% cat file1 A C F R zsh 4.3.4% <file1 while read;do printf "%s=%d\n" "$REPLY" "${#$(<file)//}";done A=9 C=7 F=4 R=2 That was the previous post. But , can anybody can explain me in detail about this line zsh...

2. Shell Programming and Scripting

Please can any one explain this ${0##/}

I did not understand what is ${0##/} PGM=${0##/} TMP=/tmp/${PGM}.$$ Please explain me.

3. Shell Programming and Scripting

please explain the below

could u please convert the below statement to shell script ---------- logdir=/smp/dyn/logfiles/cpm/pgm/pgIm $logdir = $logdir ."/pgIm${toDate}*"; ---- could u please explain the below clearly grep -i adding $logdir | grep -iv equation | awk '{print \$NF}' | sort -u | sed -e...

4. AIX

can anyone explain this?

this is the mksys b script.... can anyone explain .. what # and 1 in if condition this is the first line of the script... it is not from middle of the script.... if then echo "Not enough parameters, need a client name for mksysb" Usage="Usage: $0 <client name>" ...

5. UNIX for Dummies Questions & Answers

Please explain this

if then echo "Syntax: $0 <sid> <COLD/HOT> <DEST>" exit fi if --------------what does this mean??? echo "Syntax: $0 <sid> <COLD/HOT> <DEST>"---pls explain this as well

6. Shell Programming and Scripting

can any one explain this example

hi all i have an example i want one help me to understand cause i tried to test it but almost fail and i don't know how can i solve this problem " the main idea to read from two files and replace something from one to another " but i don't understand why it fail all time $ cat main.txt...

7. Shell Programming and Scripting

Explain $# please

I'm trying to follow a script and I see it begins with this: if ; then if ; then print "blah $0 blah blah " exit fi fi What does $# mean? I found out that $1 refers to the shell environment and the last argument that was entered or passed in the previous command. I couldn't find $#...

8. Shell Programming and Scripting

anyone can explain this?

why the case 2 will happen ? , ' should stop the history substitution ,shouldn't it? case 1 # echo "123"|sed '/123/!d' 123 case 2 # echo "123 > 456 > 1 > "|sed '/123/!d' -bash: !d': event not found case 3 # echo "123 > 456 > 12 > "|sed '/123/'\!d 123 # bash --version

9. Shell Programming and Scripting

Can someone explain this for me?

Can someone do me a favour and explain the following for me: ((r=$RANDOM%$n+1)) I know what $RANDOM does but what is % sign and what does it do with %$n+1?

10. UNIX for Dummies Questions & Answers

How I can explain this?

Hi friends! I'm learning UNIX and I have a small question. Working with Shell, i put the name of one executable (in c language) + one number and it says this: $ gcc misterioso_4.c $ ./misterioso_4 6 got: , I can not find an answer in the manual because I havent applied any variable....

LEARN ABOUT CENTOS

bundle-package

BUNDLE-PACKAGE(1)														 BUNDLE-PACKAGE(1)

NAME

       bundle-package - Package your needed .gem files into your application

SYNOPSIS

       bundle package

DESCRIPTION

       Copy  all  of  the  .gem files needed to run the application into the vendor/cache directory. In the future, when running bundle install(1)
       bundle-install.1.html, use the gems in the cache in preference to the ones on rubygems.org.

GIT AND PATH GEMS

       Since Bundler 1.2, the bundle package command can also package :git and :path dependencies besides .gem files. This needs to be	explicitly
       enabled via the --all option. Once used, the --all option will be remembered.

REMOTE FETCHING

       By  default,  if you simply run bundle install(1) bundle-install.1.html after running bundle package(1) bundle-package.1.html, bundler will
       still connect to rubygems.org to check whether a platform-specific gem exists for any of the gems in vendor/cache.

       For instance, consider this Gemfile(5):

	   source "https://rubygems.org"

	   gem "nokogiri"

       If you run bundle package under C Ruby, bundler will retrieve the version of nokogiri for the "ruby" platform. If you deploy to	JRuby  and
       run bundle install, bundler is forced to check to see whether a "java" platformed nokogiri exists.

       Even  though  the nokogiri gem for the Ruby platform is technically acceptable on JRuby, it actually has a C extension that does not run on
       JRuby. As a result, bundler will, by default, still connect to rubygems.org to check whether it has a version of one of your gems more spe-
       cific to your platform.

       This  problem is also not just limited to the "java" platform. A similar (common) problem can happen when developing on Windows and deploy-
       ing to Linux, or even when developing on OSX and deploying to Linux.

       If you know for sure that the gems packaged in vendor/cache are appropriate for the platform you are on, you can run bundle install --local
       to skip checking for more appropriate gems, and just use the ones in vendor/cache.

       One  way to be sure that you have the right platformed versions of all your gems is to run bundle package on an identical machine and check
       in the gems. For instance, you can run bundle package on an identical staging box during your  staging  process,  and  check  in  the  ven-
       dor/cache before deploying to production.

								    March 2013							 BUNDLE-PACKAGE(1)

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1. Shell Programming and Scripting

please explain this

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Please can any one explain this ${0##/}

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3. Shell Programming and Scripting

please explain the below

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can anyone explain this?

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