How to check file name format through shell script?

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Hello,

I had written a shell script that accepts input file as cmd line argument and process this file.

if [ $# -eq 1 ]; then
 if [ -f $1 ]; then
   . $1
   LOGFILE="$LOG_FILE/MIG_BIOS.log";
    get_input_file

 else
  ERROR_CODE=MSCRM0005_003
  error "$ERROR_CODE : Input file $1 is not available";
  exit 1
 fi

else
 echo "usage : $usage";
fi

I want a help in writting a get_input_file function which checks for file name format.
My input file name format is MIG_CR_<TYPE>_<TIMESTAMP>.<EXT>

get_input_file()
{
FILE = '$1'
# checking file exist or not
if [ ! -f $FILE ]; then
    echo "$FILE : does not exists";
    exit 1
elif [ ! -r $FILE ]; then
    echo "$FILE: can not read";
    exit 2
fi

// TO do
// check file name foramt is correct or not
}

Can anyone tell me how can I check the format of file name?
Please help me out. Thanks in advance.

Posted 22-Sep-10 21:36pm

Poonamol

Updated 23-Sep-10 0:20am

Sandeep Mewara

v3

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Sandeep Mewara 23-Sep-10 6:20am

PRE tags are your friends. Use it for formatting code part. It makes your question readable.

1 solution

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E.F. Nijboer · Answer 1 · 2010-09-23T01:00:00

Solution 1

A method I can think of is:

1. store the filename in a temporary file
Echo $FILE > filename.tmp

2. Use findstr with the proper regex to test the search string in the temporary file.

At this link you find a good reference of the findstr command and how to create the regex to test the filename:

http://www.computerhope.com/findstr.htm[^]

Good luck!

Posted 23-Sep-10 1:00am

E.F. Nijboer

Updated 23-Sep-10 3:30am

v2

Comments

E.F. Nijboer 23-Sep-10 9:31am

Thanks for reply.

For 1st option, If I use

FILE=`$1`
TMP=`echo $input_file | cut -d "_"; -f 1-4`
EXTN=`echo $input_file | cut -d "."; -f 5`

Will it work?

I am not able to open the link you have provided, I am getting 404 Error.

E.F. Nijboer 23-Sep-10 9:34am

First I deleted your answer and added it as a comment.

The copy-paste action didn't completely went well because the characters "tm" didn't come along. The link is fixed and should now work properly.