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Full Discussion: 'for loop' problem!
Top Forums UNIX for Dummies Questions & Answers 'for loop' problem! Post 302521511 by sjrks on Wednesday 11th of May 2011 12:28:24 PM
Old 05-11-2011
'for loop' problem!

Hi,

I'm trying to run a process on a load of data. The data is labelled as:

con_3194
con_3367
con_3173
con_3188
etc. (there are about 80 of these files).

And I'm trying to run a process called 'fslswapdim' so this process runs on all the files! Currently, I'm processing each file alone by doing:

fslswapdim con_3194 -z -x y con_3194_swapdim
fslswapdim con_3367 -z -x y con_3367_swapdim

But I would like to learn how to make a loop so they all can be processed at once.

Can anybody help me do this please? I think it's something like

for i in con_* ; do fslswapdim -z -x y con_$i_swapdim; done;

Everything I'm trying is wrong!

Thank you!
 

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SPEEDY_BACKEND(1p)														SPEEDY_BACKEND(1p)

NAME
speedy_backend - the backend process for a persistent Perl interpreter SYNOPSIS
none ; this program is not meant to be called directly. DESCRIPTION
speedy, short for SpeedyCGI, is a way to run perl scripts persistently, which can make them run much more quickly. After the script is initially run, instead of exiting, the perl interpreter is kept running inside a backend process, speedy_backend. Dur- ing subsequent runs, this interpreter is used to handle new executions instead of starting a new perl interpreter each time. A very fast frontend program, speedy, written in C, is executed for each request. This fast frontend then contacts the persistent Perl process, which is usually already running, to do the work and return the results. Each perl script runs in its own Unix process, so one perl script can't interfere with another. Command line options can also be used to deal with programs that have memory leaks or other problems that might keep them from otherwise running persistently. The speedy front end connects to the back end process, speedy_backend, via a Unix socket in /tmp. A queue is kept in a shared file in /tmp that holds an entry for each process. In that queue are the pids of the perl processes waiting for connections. The frontend pulls a process out of this queue, connects to its socket, sends over the environment and argv, and then uses this socket for stdin/stdout to the perl process. FILES
/tmp/speedy* A unix socket used to connect to the frontend process. AUTHOR
Sam Horrocks http://daemoninc.com sam@daemoninc.com NOTES
This manual page was created by Niko Tyni <ntyni@iki.fi> for Debian GNU/Linux, because the original program does not have one. It is based on the original and more complete CGI::SpeedyCGI(3pm) manual page. SEE ALSO
perl(1), CGI::SpeedyCGI(3pm), speedy(1) SPEEDY_BACKEND(1p)
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