I am trying to write a very simple bash script in order to add a file extension (.java) to a bunch of files that have no extension.
If they had an extensions (say .txt) I'd do this:
#!/bin/bash
for file in `*.txt`;
do mv $file $file.java;
done
My files, however, don't have an extension. How do I make the loop? I tried *. with no luck.
Thank you.
#!/bin/bash
for file in *; do
mv "$file" "$file".java;
done
If you only want to move files that do not already have an extension, try:
#!/bin/sh
for file in *; do
test "${file%.*}" = "$file" && mv "$file" "$file".java;
done
Note that all of the double-quotes above are superfluous if your filenames are reasonable.
mv ${file}{,.java}
#!/bin/bash
for file in *.txt ; do mv $file `echo $file | sed 's/\(.*\.\)txt/\1java/'` ; done
rename 's/.txt$/.java/' *.txtTry:
find . -maxdepth 1 -type f | sed 's/^\.\///; /\./d' | while read x; do mv "$x" "$x.java"; done