UNIX for Dummies Questions & Answers

Hi all,

i have 2 directory of files, the first directory(ext1directory) contain files of extension .ext1 and the second directory(allextdirectory) contains files of multiple extensions (.ext1,.ext2,.ext3,..)

so i want to copy the files from directory 2(allextdirectory) that have the same name as the files in directory 1(ext1directory) but only the files with different extension(ext2)

how this can be done in a shell script?

thank you.

How many extensions do you have?

Code:

cd allextdirectory
cp *.ext2 *.ext3 *.ext4 ext1directory

Alternative

Code:

for i in $(ls allextdirectory| grep -v ext1)
do
cp $i ext1directory
done

something like

Code:

cd $DIR2
for FILE in *
do
    [[ -f $DIR1/$FILE ]] || cp $FILE $DIR1
done

thank you,
in the first directory i have only 1 extension (ext1)

and the second directory i have 3 extensions(ext1,ext2,ext3)
@Leion the copy should be made based on the files that have the same name and not everything .. is what you wrote will do the trick ??

---------- Post updated at 04:06 AM ---------- Previous update was at 03:59 AM ----------

can you please tell me where in this code you copy based on the same file name in the 2 directories?? because i did not understand it ..

---------- Post updated at 04:07 AM ---------- Previous update was at 04:06 AM ----------

can please also tell me where this will copy based on equal file names in both directories??

I did not read the qn fully..
try the code below.. remove the echo once verified this is what you need..

Code:

for i in $(ls ext1directory)
do
ii=$(i%ext1)
   for j in $(ls allextdirectory/${ii}* | grep -v ${i})
   do
   echo cp $j ext1directory
   done
done

this is copying everything from the allextdirectory, not only the equal names.. besides i want to copy only the files that have same names and ext2. i don't want to copy other extensions (even if the files have exact names)

no.. the ii variable will get the filename without extension. and the grep -v part will filter away the original filename before copy..

---------- Post updated at 05:26 PM ---------- Previous update was at 05:23 PM ----------

Just copy ext2 and no other extensions.

Code:

for i in $(ls ext1directory)
do
ii=$(i%ext1)
cp allextdirectory/${ii}ext2 ext1directory
done