Contents
Delete files not modified in n days
Useful for clearing out caches that aren't properly cleaned out otherwise.
# Delete files not modified in 30 days
find /tmp -type f -mtime +30 -exec rm {} \;
# Same, but faster
find /tmp -type f -mtime +30 -print0 | xargs -0 -n256 rm
Replace text in all files in & under the current directory
find . -type f -exec sed -i 's/old/new/g' {} \;
Find files NOT named something
# Find files matching a pattern that are NOT already compressed, then compress them
# (This particular example compresses Maildirs for use w/ dovecot's transparent decompression)
find . -type f -name '*S=*' -not -name '*.gz' -print0 | xargs -0 -P4 -n 16 zopfli -l100
# Version that uses pigz
find . -type f -name '*S=*' -not -name '*.gz' -print0 | xargs -0 -n 16 pigz -11 -I100
Fix whitespace issues
for EXTENSION in php css html js txt md; do
# Remove whitespace (incl. tabs) at the end of lines
find . -type f -name "*${EXTENSION}" -exec sed -i "s/[[:blank:]]*$//" {} \;
# Add trailing newlines to the end of a file
find . -type f -name "*${EXTENSION}" -exec sed -i -e '$a\' {} \;
# Replace tabs w/ spaces
find . -type f -name "*${EXTENSION}" -exec sed -i 's/\t/ /g' {} \;
# UNIX newlines
find . -type f -name "*${EXTENSION}" -exec dos2unix {} \;
done
Delete all dangling symbolic links
