Shell Programming and Scripting

Hi All ,

I am new to UNIX.
I have a requirement where user transfers 10-15 files into a directory "/upload".
File name will be like T1234_H and T1234_D or R1234_H and R1234_D .
The _H and _D files are associated to each other.They must always be together in the server.

Once the files are transferred I need to perform a check if the file T1234_H has it associated file T1234_D and then move these files to /process/Tfiles directory.
If the file T1234_H is only present in the directory "/upload" and there is no T1234_D file or vice versa the program shouldn't move the file to /upload/Tfiles path and it should throw me an error saying _D file is missing and do the same thing to R1234_H and R1234_D and move to directory /process/Rfiles.

You may think why can't you move the files T1234_H and T1234_D directly to /upload/Tfiles directory rather than doing all this.
But the requirement is to check the files with same name(first 5 chars) say T1234_H and T1234_D both are present in the /upload path and then move these to new path(/process/Tfiles ) based on the first letter of the file name "T" or "R" for processing data in the file.

Regards,
Ravi

Something like the following should work, note this is completely untested code...

Code:

#!/bin/bash
old_dir=$(pwd)
cd /upload
for format in R T ; do
   for file in $(ls ${format}*_H) ; do
        if [ -e ${file%_H}_D ] ; then # the complementary file exists
            mv $file ${file%_H}_D /process/${format}files
         else 
            echo $file encountered without complement
         fi
   done
done
cd $old_dir

Hi Skrynesaver,
Thanks for your reply.
This is the current logic I am using to move the files starting with name "T" from one direcotry to the new direcotry.

In the for loop I need to perfoer a check so to ensure that T*_H and its associated T*_D files are present in the $v_dir_rec, if both files are there
then I need to move them to the new direcotry($v_dir_path).

Code:

echo 'Starting... '
if [ "$v_source" = "T" ]
then
  (ls -1 -t -r $v_source*_H ) >> $v_logfile_p
  (ls -1 -t -r $v_source*_D ) >> $v_logfile_p
fi
for v_filename in `cat $v_logfile_p`
echo 'move '$v_dir_rec'/'$v_filename ' '$v_dir_path
mv $v_dir_rec'/'$v_filename  $v_dir_path
done