Shell Programming and Scripting

Hi,

I have some hundreds/thousands of files named logX.dat, where X can be any integer, and they are sequential, X ranges between 1 and any number:

log1.dat log2.dat log3.dat log6.dat log10.dat ... log6000.dat

I would like to rename them to

scatter_params_0001.dat scatter_params_0002.dat scatter_params_0003.dat scatter_params_0006.dat scatter_params_0010.dat scatter_params_6000.dat

Note that in the scatter files I need them with leading zeroes, which are absent in the original log files.

Any help will be appreciated.

thanks

Pau

Code:

#!/bin/ksh93
for ((i=1;i<6000;i++))
do
   mv $(printf "log%d.dat" $i) $(printf "scatter_params_%04d.dat" $i)
done

Replace #!/bin/ksh93 by #!/bin/bash if missing.

if all your file names are in the file pau.txt:

Code:

log1.dat
log2.dat
log3.dat
log6.dat
log10.dat
log6000.dat

Code:

nawk -F'.' '{a=$1;sub("[^0-9]+", "",a);printf("mv %s  scatter_params_%04d.dat\n", $0, a)}' pau.txt

once satisfied with the results pipe the above to 'sh':

Code:

nawk -F'.' '{a=$1;sub("[^0-9]+", "",a);printf("mv %s  scatter_params_%04d.dat\n", $0, a)}' pau.txt | sh

thanks!!!

The first reply runs over 6000 every time, which is not very convenient

The second answer workds just fine... but since this is going to be part of a script, I am wondering about the sh part of it... can it be removed?

Thanks again

Isn't it what you asked for ?
Do you simply want the number of files to process to be passed as a parameter ? or to stop when there is no source file to rename ?

Hmmm... I'm confused. You the trailing '|sh' to do the actual renaming.
I provided the part withOUT the '|sh' for you to test/troubleshoot the 'mv' command. Once this is done, you'd need to add the trailing '|sh' to do the renaming.
Maybe I'm missing something obvious - I've been known to do that.

Code:

for file in log*.dat;do mv $file  $(printf "scatter_parrams_%04d.dat" ${file//[a-z.]/});done