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removing a word in a multiple file starting at the dot extension

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# 1  
Old 08-23-2011
removing a word in a multiple file starting at the dot extension
hi

I would like to ask if someone knows a command or a script on how to rename a multiple file in the directory starting at the end of the filename or at the .extension( i would like to remove the last 11 character before the extension) for example

Below is the result of my command ls inside the directory

Quote:
BBC_In_footsteps_of_Alexander_the_mountain_20-v3veN2U__3I.mp4
BBC_In_the_footsteps_of_Alexander_Afghanistan_17-thAS28SWKKU.mp4
BBC_In_the_footsteps_of_Alexander_Alexandria_7-rQcjjpRwqw4.mp4
BBC_In_the_footsteps_of_Alexander_army_revolts_26-Jwrl2hPSFWA.mp4
BBC_In_the_footsteps_of_Alexander_Bactria_19-cC5pGsUgyiM.mp4
BBC_In_the_footsteps_of_Alexander_climbing_pir_sar_24-oz0pb-Zycvc.mp4
BBC_In_the_footsteps_of_Alexander_Darius_Dies_13-Pn9nj7rWT60.mp4
BBC_In_the_footsteps_of_Alexander_ending_31-4wW8nJi5tOk.mp4
BBC_In_the_footsteps_of_Alexander_ends_of_earth_22-uMgX_UDHo4g.mp4
BBC_In_the_footsteps_of_Alexander_Gaza_6-pr2mkAgQL9k.mp4
BBC_In_the_footsteps_of_Alexander_gordion_knot_4-5nfmZfEV_wA.mp4
BBC_In_the_footsteps_of_Alexander_Indus_Delta_29-8CiauNRLSUU.mp4
.....
Quote:
BBC_In_footsteps_of_Alexander_the_mountain_20.mp4
BBC_In_the_footsteps_of_Alexander_Afghanistan_17.mp4
The filename has no predefined length or has diff length so starting at the beggining of the filename is not much use.

Im using pyrenamer but the delete option will start counting character at the beggining of the filename and there has no option that will start deleting at the end of after the extension.

Thanks for any input..
# 2  
Old 08-23-2011
Code:
sed 's/.\{12\}\(\..*\)/\1/' Inp_File

# 3  
Old 08-23-2011
Assuming you have BASH or a recent KSH:

Code:
find ./ -iname 'BBC_*.mp4' | while IFS="." read NAME EXT
do
        echo mv "$NAME.$EXT" "${NAME:0:$((${#NAME}-11))}.$EXT"
done

Remove the 'echo' once you're sure it does what you want.
# 4  
Old 08-23-2011
Thanks very much for a helpful response

By the way i solve my problem by using this single command below

Quote:
#rename -n 's/^(.*)-.{11}\.mp4$/$1.mp4/' *.mp4
# 5  
Old 08-23-2011
You didn't say what system you had, so everyone worked under the assumption you didn't have that.
# 6  
Old 08-25-2011
@Corona688: Im sorry i didn't state what system im working with its ubuntu. Im sorry by the way i tried your script and i would like to ask about the NAME is it a variable that i need to assigned. Cause when i used it throws me this error

Quote:
line 5: $((${#NAME}-11)): substring expression < 0
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