UNIX for Dummies Questions & Answers

Hi there,

I hope someone can help me with this problem :

I have a directory (/var/www/file/imgprofil) which contains about 10000 JPG files. They have a naming convention thus :

prefix-date-key-suffix.jpg

they all have the prefix p-20050608-
then AAAA is a 4 letter code
the suffix is either -g / -v / -m or no suffix
the file extension is always .jpg

sample :

p-20050608-AFWC-g.jpg
p-20050608-AFWC-m.jpg
p-20050608-AFWC-v.jpg
p-20050608-AFWC.jpg
p-20050608-AFWD-g.jpg
p-20050608-AFWD-m.jpg
p-20050608-AFWD-v.jpg
p-20050608-AFWD.jpg


My problem is that some of the files have 1 or more lower case letters in the 4 letter code, so they are like this :

p-20050608-Ajyd-g.jpg
p-20050608-Ajyd-m.jpg
p-20050608-Ajyd-v.jpg
p-20050608-Ajyd.jpg
p-20050608-Ajyw-g.jpg
p-20050608-Ajyw-m.jpg
p-20050608-Ajyw-v.jpg
p-20050608-Ajyw.jpg

Now, Unix being the case sensitive angel that it is I need to transform these lowercase "keys" filenames into uppercase, so the sample would be :

p-20050608-AJYD-g.jpg
p-20050608-AJYD-m.jpg
p-20050608-AJYD-v.jpg
p-20050608-AJYD.jpg
p-20050608-AJYW-g.jpg
p-20050608-AJYW-m.jpg
p-20050608-AJYW-v.jpg
p-20050608-AJYW.jpg

While of course keeping the lowercase prefix (p-) and suffix (-g /-m / -v) and the lowercase file extension (.jpg)

I hope this is clear and that someone can help with this,

Thanks,

Steve

for old_name in `ls -l path_to_dir/*jpg`
do
new_name=`awk -F"-" 'BEGIN { OFS="-"} {$3=toupper($3);print $0}' $old_name`
mv $old_name $new_name
done

Something using sed:

for filename in *.jpg;
do
echo $filename | sed -e 's/Aiyd/AIYD/g'
done

This is for 1 particular case ( aiyd ) and not for all the options

Isnt it ?

Apart from that, how will you change the name of the file with a sed. It requires a mv very specifically.

-vino

Perfectly Agree,

But i could accomplish only that much with my knowledge of sed.
Can anyone give a general one with sed.

mv is taken for granted.

for filename in *.jpg;
do
newname=`echo $filename | sed -e 's/Aiyd/AIYD/g'`
mv $filename newname
done

This has some errors in that awk line. Firstly, it's attempting to process the JPG file itself rather than the file name.
Also, using $3 sometimes matches more than the 4 letter code (where there is no suffix).

Perhaps try:

Code:

for i in *.jpg
do
  eval $(echo $i|awk '{printf "mv %s %s\n", $0,\
    substr($0,1,11) toupper(substr($0,12,4)) substr($0,16)}')
done