Rename and Increment Inconsistent Filenames 1

[mrimagepueblo]

I have a need to rename .jpg files coming in with inconsistent ending to something I can run a better if statement on in perl script I use. The front part of the filename is always consistent but the back end of the file can be anything.
I am wanting to write a shell script in #!/bin/sh to rename the files. There can anywhere from 1 to 8 .jpg files per occurence of a particular number.

1059133_124025.jpg
1059133_127329.jpg
1059133_145098.jpg
1059133_179041.jpg
1059133_134855.jpg
1059133_236549.jpg
1059133_234539.jpg
1059133_456987.jpg

1059145_170946.jpg
1059145_168902.jpg
1059145_234987.jpg
1059145_123494.jpg
1059145_232990.jpg
1059145_234380.jpg
1059145_129042.jpg
1059145_289333.jpg

I would like the files renamed keeping the front part of the filename to the _ and then incementing the back part to either _1.jpg, _2.jpg, _3.jpg,_4.jpg,_5.jpg,_6.jpg,_7.jpg,_8.jpg
or,
_a.jpg,_b.jpg,_c.jpg,_d.jpg,_e.jpg,_f.jpg,_g.jpg,_h.jpg
so the filenames would look like.

1059133_a.jpg
1059133_b.jpg
1059133_c.jpg
1059133_d.jpg
1059133_e.jpg
1059133_f.jpg
1059133_g.jpg
1059133_h.jpg
or
1059145_1.jpg
1059145_2.jpg
1059145_3.jpg
1059145_4.jpg
1059145_5.jpg
1059145_6.jpg
1059145_7.jpg
1059145_8.jpg

any help would greatly be appreciated.

 

[stefanwagner]

Part #1

a=0; for dat in 1059133_*.jpg ; do mv $dat 1059133_$a.jpg; a=$(($a+1)); done
#
# or 
#
a=0; 
for dat in 1059133_*.jpg ; 
do 
    mv $dat 1059133_$a.jpg
    a=$(($a+1))
done

Part #2 analog

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[mrimagepueblo]

This works fine if I know the first part of the number 1059133. What would it be if I wanted to use a wildcard for the first set of numbers? In other words, I would be downloading everyday a set of pictures, and don't necesarily want to have to hard code in the 1059133 to make the conversion. Obviously following your example *_* renames all the files to *_1.jpg, etc.
I'm not sure I understand your Part#2 analog statement either?

 

[p5wizard]

The use two loops (untested code):

#!/bin/sh
DEBUG=""
DEBUG=echo # omit or comment out this line to run for real
for first in `ls *_*.jpg|cut -d_ -f1|sort -u`
do
 a=1
 for dat in $first_*.jpg
 do
  $DEBUG mv $dat $first_$a.jpg
  a=`expr $a + 1`
 done
done

HTH,

p5wizard

 

[mrimagepueblo]

p5wizard it looks like this one is clobbering everything in front of the .jpg in Echo mode and just renaming 1.jpg, 2.jpg, etc. When I run it, it wipes out all the files and leaves me with a 1.jpg and I get consecutive errors for the number of files that are in the directory.
mv: `1.jpg' and `1.jpg' are the same file

 

[p5wizard]

OK, so put braces around the variable names:

#!/bin/sh
DEBUG=""
DEBUG=echo # omit or comment out this line to run for real
for first in `ls *_*.jpg|cut -d_ -f1|sort -u`
do
 a=1
 for dat in ${first}_*.jpg
 do
  ${DEBUG} mv ${dat} ${first}_${a}.jpg
  a=`expr $a + 1`
 done
done

I told you it was untested... You didn't run it with DEBUG first? I hope you ran it on test dir first.


HTH,

p5wizard

 

[mrimagepueblo]

p5wizard, thanks a million, exactly what I was looking for.
Not to worry, I caught your comment about untested. I only pulled one file off the server, just had to download the file again.
Thanks again. Someday, I'll be able to follow all this logic.