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Easy way to add a zero to the filename if it need it

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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

1

With big help from here, I have soon converted all my jpg files to gif (thanks again ALOT)

but when I was looking around at my files I have noticed that some folder I have added a zero to the filenames.

The filename standard I trying to have is 001.gif, 002.gif.... but some of the files have 01.gif, 02.gif and so on and that is not good for me.

So with the code, I got from convert that I find something that calls globe star I was ready to see if I can fix that for myself :)

but nothing happened when I run the code. Right now I just try to see if I can convert the file that has JPG

for f in /lib/**/*jpg; do
 if [ "$#f" -eq 2 ]; then
 mv "$f" "0$f" 
 fi 
done

batch-rename

share|improve this question

edited 7 hours ago

Razor Rassh

4577 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

add a comment | 

1

With big help from here, I have soon converted all my jpg files to gif (thanks again ALOT)

but when I was looking around at my files I have noticed that some folder I have added a zero to the filenames.

The filename standard I trying to have is 001.gif, 002.gif.... but some of the files have 01.gif, 02.gif and so on and that is not good for me.

So with the code, I got from convert that I find something that calls globe star I was ready to see if I can fix that for myself :)

but nothing happened when I run the code. Right now I just try to see if I can convert the file that has JPG

for f in /lib/**/*jpg; do
 if [ "$#f" -eq 2 ]; then
 mv "$f" "0$f" 
 fi 
done

batch-rename

share|improve this question

edited 7 hours ago

Razor Rassh

4577 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

add a comment | 

With big help from here, I have soon converted all my jpg files to gif (thanks again ALOT)

but when I was looking around at my files I have noticed that some folder I have added a zero to the filenames.

The filename standard I trying to have is 001.gif, 002.gif.... but some of the files have 01.gif, 02.gif and so on and that is not good for me.

So with the code, I got from convert that I find something that calls globe star I was ready to see if I can fix that for myself :)

but nothing happened when I run the code. Right now I just try to see if I can convert the file that has JPG

for f in /lib/**/*jpg; do
 if [ "$#f" -eq 2 ]; then
 mv "$f" "0$f" 
 fi 
done

batch-rename

share|improve this question

edited 7 hours ago

Razor Rassh

4577 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

for f in /lib/**/*jpg; do
 if [ "$#f" -eq 2 ]; then
 mv "$f" "0$f" 
 fi 
done

share|improve this question

edited 7 hours ago

Razor Rassh

4577 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

share|improve this question

edited 7 hours ago

Razor Rassh

4577 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

edited 7 hours ago

Razor Rassh

4577 bronze badges

edited 7 hours ago

Razor Rassh

4577 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

asked 9 hours ago

CazzCazz

6244 bronze badges

1 Answer
1

active

oldest

votes

4

There are lots of different ways to do this, but taking your attempt as a starting point

for f in /lib/**/[0-9][0-9].jpg; do
 b="$f##*/"; d="$f%/*"; 
 echo mv "$f" "$d/0$b"; 
done

That is, instead of matching all jpg files and then trying to test how many digits each has, just match the ones with exactly two leading digits. Remove the echo once you are satisfied that it's working correctly.

---

Alternatively you could something like this with the Perl-based prename command:

prename -n 's/(d+)./sprintf("%03d.",$1)/e' /lib/**/*.jpg

This takes any non-empty sequence of digits before a . and reprints them zero-padded to a minimum width of 3 digits.

share|improve this answer

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm very simple idea and I love it But I have problem with the code, it add 0 at the beginner of the address and not the filename.
  
  – Cazz
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Cazz apologies that was a dumb error on my part - please try it now
  
  – steeldriver
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ohh no I have to thank you. it works fine and now I just have to understand why it works and I think I know why.
  
  – Cazz
  6 hours ago
  

  
  
  
  

add a comment | 

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4

There are lots of different ways to do this, but taking your attempt as a starting point

for f in /lib/**/[0-9][0-9].jpg; do
 b="$f##*/"; d="$f%/*"; 
 echo mv "$f" "$d/0$b"; 
done

That is, instead of matching all jpg files and then trying to test how many digits each has, just match the ones with exactly two leading digits. Remove the echo once you are satisfied that it's working correctly.

---

Alternatively you could something like this with the Perl-based prename command:

prename -n 's/(d+)./sprintf("%03d.",$1)/e' /lib/**/*.jpg

This takes any non-empty sequence of digits before a . and reprints them zero-padded to a minimum width of 3 digits.

share|improve this answer

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm very simple idea and I love it But I have problem with the code, it add 0 at the beginner of the address and not the filename.
  
  – Cazz
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Cazz apologies that was a dumb error on my part - please try it now
  
  – steeldriver
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ohh no I have to thank you. it works fine and now I just have to understand why it works and I think I know why.
  
  – Cazz
  6 hours ago
  

  
  
  
  

add a comment | 

4

There are lots of different ways to do this, but taking your attempt as a starting point

for f in /lib/**/[0-9][0-9].jpg; do
 b="$f##*/"; d="$f%/*"; 
 echo mv "$f" "$d/0$b"; 
done

That is, instead of matching all jpg files and then trying to test how many digits each has, just match the ones with exactly two leading digits. Remove the echo once you are satisfied that it's working correctly.

---

Alternatively you could something like this with the Perl-based prename command:

prename -n 's/(d+)./sprintf("%03d.",$1)/e' /lib/**/*.jpg

This takes any non-empty sequence of digits before a . and reprints them zero-padded to a minimum width of 3 digits.

share|improve this answer

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm very simple idea and I love it But I have problem with the code, it add 0 at the beginner of the address and not the filename.
  
  – Cazz
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Cazz apologies that was a dumb error on my part - please try it now
  
  – steeldriver
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ohh no I have to thank you. it works fine and now I just have to understand why it works and I think I know why.
  
  – Cazz
  6 hours ago
  

  
  
  
  

add a comment | 

There are lots of different ways to do this, but taking your attempt as a starting point

for f in /lib/**/[0-9][0-9].jpg; do
 b="$f##*/"; d="$f%/*"; 
 echo mv "$f" "$d/0$b"; 
done

That is, instead of matching all jpg files and then trying to test how many digits each has, just match the ones with exactly two leading digits. Remove the echo once you are satisfied that it's working correctly.

---

Alternatively you could something like this with the Perl-based prename command:

prename -n 's/(d+)./sprintf("%03d.",$1)/e' /lib/**/*.jpg

This takes any non-empty sequence of digits before a . and reprints them zero-padded to a minimum width of 3 digits.

share|improve this answer

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges

for f in /lib/**/[0-9][0-9].jpg; do
 b="$f##*/"; d="$f%/*"; 
 echo mv "$f" "$d/0$b"; 
done

prename -n 's/(d+)./sprintf("%03d.",$1)/e' /lib/**/*.jpg

share|improve this answer

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

edited 6 hours ago

Terrance

21.3k33 gold badges5151 silver badges104104 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges

answered 8 hours ago

steeldriversteeldriver

76.6k1212 gold badges127127 silver badges205205 bronze badges