help with a script

[chronusdark]

im new to writing bash scripts and i need to figure out how to loop a command on every file in a directory
and how to put the filename less the extention into a variable

[kabus]

This would put the filename of the first file in a directory into the variable $file and strip off everything after (and including) the last dot in the filename, then repeat the process with the next file until there aren't any files left :
for file in *; do file="${file%.*}"; echo "$file"; done

[chronusdark]

thank you very much

[chronusdark]

one more question how do i add one more character to the end of th $file varible?

[hod139]

one more question how do i add one more character to the end of th $file varible?

I'm not 100% sure what you are asking. If you want to add a new file extension just type:

for file in *; do file="${file%.*}.foo"; echo "$file"; done