Shell Programming and Scripting

I think I see the problem. You put the code in a script, made it executable. When you open it in your file manager you get asked if you want to "Run in Terminal", "Display", Cancel, Run, right? You clicked run in terminal, but the processing of the 6 files was too fast to see anything.

Either you run the script in a terminal (NOT from file manager) or you add sleep 5 at the end of the script and try again.

Oh, one other thing, you said your files are like SG1130113000247.CAPNFXS, but they are more like SG1130113000247.CAPNFXS.csv
If you want the output to be 130113000247, both scripts will produce right output.
If you want the output to be 130113000247.csv, substitute "$new" with "$new.csv"

Terminal shows:

Code:

mv SG1130113001247.CAPNFXT.csv 130113001247.csv
mv SG1130113002247.CAPNFXU.csv 130113002247.csv
mv SG1130113003246.CAPNFXV.csv 130113003246.csv
mv SG1130113004247.CAPNFXW.csv 130113004247.csv
mv SG1130113005247.CAPNFXX.csv 130113005247.csv
mv SG1130113010247.CAPNFXY.csv 130113010247.csv

But in my folder, the filenames were not changed.

---------- Post updated at 08:21 AM ---------- Previous update was at 08:20 AM ----------

Code:

[root@localhost rename]# printf "\"%s\"\n" *SG1*
"SG1130113001247.CAPNFXT.csv"
"SG1130113002247.CAPNFXU.csv"
"SG1130113003246.CAPNFXV.csv"
"SG1130113004247.CAPNFXW.csv"
"SG1130113005247.CAPNFXX.csv"
"SG1130113010247.CAPNFXY.csv"

It isn't going to do anything until you change the line:

Code:

       echo mv "$file" "$new"

to:

Code:

       mv "$file" "$new"