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Full Discussion: How to check file name format using shell script?
Top Forums Shell Programming and Scripting How to check file name format using shell script? Post 302460615 by umar.shaikh on Thursday 7th of October 2010 06:53:14 AM
Old 10-07-2010
I can think of a quick way to do this via 'cut'.
The first part would be to get rid of the file extension:
Code:
FILE_SHORT_NAME=`echo $FILE_NAME | cut -d'.' -f1`

The next would be to split the remaining name into 5 parts and check if each part is present:

Code:
PART_1=`echo $FILE_SHORT_NAME | cut -d'_' -f1`
PART_2=`echo $FILE_SHORT_NAME | cut -d'_' -f2`
PART_3=`echo $FILE_SHORT_NAME | cut -d'_' -f3`
PART_4=`echo $FILE_SHORT_NAME | cut -d'_' -f4`
PART_5=`echo $FILE_SHORT_NAME | cut -d'_' -f5`

You could then do basic checks to make sure that none of these parts is an empty string:

Code:
if [ -z $PART_1 ]
then
        echo "Please enter a correct filename"
fi

And similarly for the other parts as well. Up to you whether you want to get them in bulk and check them or get them one by one and check them and throw an error at the first place itself!
 

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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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