Removing part of a file name and appending into a single file


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# 1  
Removing part of a file name and appending into a single file

I have two files like ABC_DEF_yyyyymmdd_hhmiss_XXX.txt and ABC_DEF_yyyyymmdd_hhmiss_YYY.txt. The date part is going to be changing everytime. How do i remove this date part of the file and create a single file like ABC_DEF_XXX.txt.
# 2  
do you want to merge data from these type of files into one file ABC_DEF_XXX.txt?
# 3  
I don't know what you are trying to accomplish exactly. Are you wanting to retain the contents of the file or just create new one without date?

Here ya go:

Code:
cat ABC_DEF_yyyyymmdd_hhmiss_XXX.txt > ABC_DEF.txt

Or....
Code:
mv ABC_DEF_yyyyymmdd_hhmiss_XXX.txt ABC_DEF.txt

Or....

Give some specifics, and I'm sure we can help you out!

---------- Post updated at 02:35 PM ---------- Previous update was at 02:32 PM ----------

If it is in a script that is reading this, maybe put this in:

Code:
sed -e -i 's/ABC_DEF.*$/ABC_DEF.txt/g' ABC_DEF_yyyyymmdd_hhmiss_XXX.txt

# 4  
Okie.. i want to remove the dynamic date part of both the files and merge it to a single file abc_def_xxx.txt.

To be specific, this is being used in a shell script that will pass the initial name of the file ( say abc_def.txt). Now my search directory woud be having some files with the pattern, abc_def_yyyymmdd_hhmiss_XXX.txt . So i need to search the directory for this pattern. once the files are found in the target directory, i need to merge thses files into a single file which will be named as abc_def_xxx.txt.

Hope i am clear this time. Please suggest how to get this accomplished
# 5  
Assuming you already have list of files needed to be merged. Following is one method you can follow:
Code:
>abc_def_xxx.txt
while read file
do
cat $file >> abc_def_xxx.txt
done < file_list

# 6  
This is just a sample. I am sure you can modify it to fit your needs:

Code:
#!/bin/sh
filemerge=/path/merge
newfile=/path/abc_def_xxx.txt.
#
ls /path/directory/ | grep abc_def* > $filemerge
#
for j in `cat $filemerge`
do
cat $j >> $newfile
echo "adding $filemerge to $newfile"
done
rm $filemerge

# 7  
How do i extract the date part of the existing file in the process to use it in the log flog_<date part extracted>. Also i want ot remove the original files after the merge
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