Solved

Find latest version from file name and increment the version

Posted on 2014-04-04
5
521 Views
Last Modified: 2014-04-08
I have a directory called project and subdirectory called migration

the migraton folder has several sql files  in format  V1__Build.sql, V2__Build.sql , V3__Build.sql.

Format  is  V<#><Double Underscore>Build.sql


I want  a script which can sort through the filenames in migration directory and create a  .sql fle with incremented verson number. For example if the directory contains V1__Build.sql, V2__Build.sql and V3__build.sql , script should create V4__Build.sql


thanks for your help
0
Comment
Question by:maverickxx
  • 3
  • 2
5 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 39979680
perl -e 'open F,">V".((sort{$a<=>$b}map{/(\d+)/}<V*__Build.sql>)[-1]+1)."__Build.sql"'
0
 

Author Comment

by:maverickxx
ID: 39983721
Ozo,
thanks for the reply,

how do  change this perl if the files are in format V1__<sometext1>.sql,  V2__<Sometext2>.sql
0
 
LVL 84

Expert Comment

by:ozo
ID: 39983831
Is <sometext1> different from <Sometext2>?  
Is <Sometext2> the result of capitalizing and incrementing <sometext1>?
Could it be possible to find V1__<Sometext2>.sql,  V2__<sometext1>.sql in the folder?
and if so, what should be done with them?
0
 

Author Comment

by:maverickxx
ID: 39983859
Sometest1 and sometext2 are not changed and are different.  I Just need to extract V# from V#___<sometext>.sql and find the next version.

For simplicity,  lets us asssume that "sometext4" for V4_<sometext4> is coming from a variable $sometext4 from within the script.


So next version would be V4__$sometext4
0
 
LVL 84

Accepted Solution

by:
ozo earned 500 total points
ID: 39983871
open F,">V".((sort{$a<=>$b}map{/(\d+)/}<V*__$sometext4.sql>)[-1]+1)."__$sometext4.sql";
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Zimbra on Amazon Linux help 7 106
lunix and unix command 21 111
Linux mount of Windows Shared Now Fails 8 110
trouble on installing syslog-ng on CentOS 7 7 92
Attention: This article will no longer be maintained. If you have any questions, please feel free to mail me. jgh@FreeBSD.org Please see http://www.freebsd.org/doc/en_US.ISO8859-1/articles/freebsd-update-server/ for the updated article. It is avail…
How to remove superseded packages in windows w60 or w61 installation media (.wim) or online system to prevent unnecessary space. w60 means Windows Vista or Windows Server 2008. w61 means Windows 7 or Windows Server 2008 R2. There are various …
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

679 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question