Need help renaming bulk file extentions

Shell Programming and Scripting
1

Hello,

I am trying to rename bulk files however i dont think the rename/mv command is giong to help me here. here is a quick snapshot of the files I need to rename:

75008040 -rw-r----- 1 root root 8716 May 8 05:00 10.9.144.2
75008041 -rw-r----- 1 root root 11700 May 8 05:00 10.9.160.2
75008042 -rw-r----- 1 root root 9019 May 8 05:00 10.9.16.2
75008043 -rw-r----- 1 root root 10011 May 8 05:00 10.9.176.2

I would like the files to look lik this when done:

75008040 -rw-r----- 1 root root 8716 May 8 05:00 10.9.144.2.txt
75008041 -rw-r----- 1 root root 11700 May 8 05:00 10.9.160.2.txt
75008042 -rw-r----- 1 root root 9019 May 8 05:00 10.9.16.2.txt
75008043 -rw-r----- 1 root root 10011 May 8 05:00 10.9.176.2.txt

I think the issues is that thre are many dots int he filename and mv/rename doest understand that. Not suree what I can do. My goal is to figure out he cmmand and run a cron job to do this daily as new files are writin. Thanks in advance for any suggestions.

2

Simply use a loop, quote, and * wildcard will expand to every filename starting with 10:

for i in 10.*; do mv "$i" "$i".txt; done
3

Hi there,

I'm not close to my Linux Box, but I think the dots has no problem :

for i in `ls -l | awk '{ print $NF}'`
do
mv $i $i".txt"
done

Check on dummy files before, my code isn't checked.:smiley:

4

thanks for the quick response but I am a linux newb. Where would I write this code?

5

The above two solution would add .txt to the file names.

But, as Jallan mentioned - he/she would be running a cron job everyday to add .txt to the new files add to that directory.

The above codes will also add .txt to the files that already have .txt extension.

So I guess first is to get file names that do no have .txt extension and then update them.

6

Actually my cron job would delete all files first and add the new files then add .txt. But im not sure how to write this code in a cron job:(

7

Check out the below post on cron and crontab:

Lets see what kind of questions you have after that..

8

actually my question is not on crantab. Im asking where to I type 'for i in 10.*; do mv "$i" "$i".txt;'?

9

My quesiton is not about cron... Im asking where to I type for i in 10.*; do mv "$i" "$i".txt;? I tried typing it at eh commoand line but that does not work.

10

ACtully my question is where do I type 'for i in 10.*; do mv "$i" "$i".txt; done'? I does not work on the command line.

11

You should write those commands in one script file and then run this file in a cron.

# delete existing files
rm /your_dir/10.*
# create/add new files ...
...
# rename new files
for i in `ls /your_dir/10.*`
do
   mv ${i} ${i}.txt
done