Need Help renaming multiple files

[jimaki141]

I am trying to rename multiple files in a directory and add the Date/Time stamp to the file name.

Example:
file1.txt
file2.txt
file3.txt

Renamed to
2009_02_01_21.txt
2009_02_02_21.txt
2009_02_03_21.txt

I am able to accomplish this using this command:
mv file1.txt "`date +%Y_%m%d_%H`".txt

But I want to automate this task, I have many files to process and I dont want to do them one by one.

I already tried this but it does not work
mv *.txt "`date +%Y_%m%d_%H`".txt

Thanks in advance for any help.

[bigtomrodney]

I'm assuming you want to take the number from the original filename and put it in the third number position. This is quick and hackish, but it might get you started:

 for i in *;do mv "$i" "$(date +%Y_%m_$(echo $i |sed s/file// |sed s/.txt//)_%d)".txt;done

[jimaki141]

I'm assuming you want to take the number from the original filename and put it in the third number position. This is quick and hackish, but it might get you started:

 for i in *;do mv "$i" "$(date +%Y_%m_$(echo $i |sed s/file// |sed s/.txt//)_%d)".txt;done

BigTomRodney

Thanks for the help what would I use if I did not want to kee the original filename just the Date/Time stamp?

Also your solution does not handle spaces well.

J