how to change extensions for many files in other directory path

[FahadOnline]

Hi, I've got to learn how to change the extensions for many files in the working directory using the following in command line

for x in *.ext1; do mv "$x" "${x%.ext1}.ext2"; done

but I want to know how to do the same job with specifying a path to another directory that contains the files I want to modify, in other wods, I don't want to navigate to each directory using "cd" to run that command.

Hope someone here have the answer, I've been googling very much for this but couldn't find it.

Thanks you in advance.

[rkowalick]

The easiest way would be to take an optional command line argument, leading you to something like this:

if [ -n "$1" ]; then
cd "$1"
fi
for x in *.ext1; do
mv "$x" "${x%.ext1}.ext2"
done

[FahadOnline]

Thank you very much for your reply

unfortunately, I'm not an expert in these commands, just I need to know where I have to put the path of the directory.

[khafa]

if you just wanna know where to specify the directory path it will be as follows

for x in /path/to/directory/*.ext1; do mv "$x" "/path/to/directory/${x%.ext1}.ext2"; done

/path/to/directory is the path to the folder you wanna run the command from.

[FahadOnline]

this has worked for me

for x in path/to/files/*.ext1; do mv "$x" "${x%.ext1}.ext2";

done

Thanks