emacs strip blank lines

Spiral-Bound Pad (by incurable_hippie)

Here is a quick way to strip (remove) blank lines from a file with emacs.

1. position on top of file: M-<
2. Call a query-regex-replace: M-C-%
3. input the regex ^ C-q C-j that stand for match all lines that consist in only a carriage return.
4. RET-RET. The first one confirm the regex and the last one is for “replace with nothing”.
5. When asked use ! to replace-all.

Summing all commands:

M-< C-M-% ^ C-q C-j RET RET !

here you are

[bash] counting lines

It happened that I needed to count all lines of code in all java/jsp files of a project. What faster than bash can do this?

$ find -type f -iregex ‘.+\.j\(sp\|ava\)$’ -print0 | xargs -0 wc -l

However this wont skip the blank lines.