read content of file.txt and replace all text with text2 and put it into file2.txt cat file.txt | sed s/text/text2/ > file2.txt
scp /path/to/local/file username@hostname:/path/to/copy/to/ scp username@hostname:/path/to/remote/file /local/path/to/copy/to/
search for case-insensitive index.php in current dir find ./ -iname "index.php"
search all files (but .svn) and look for string myFunction grep -iR myFunction ./ --exclude-dir=.svn
find -name "*._*"
remove all files that you find in directory that match regexp rm -f `find ./ | grep "^\.\_.*"`
As for bulk processing, with find's -exec option or the xargs command, you can apply arbitrary commands to the files find finds.
replace "foo" with "bar" in all C source & header files
$ find . -name '*.[ch]' -a -exec sed -i s/foo/bar/ {} \;
find total size of all html files $ find . -name '*.html' -a -exec ls -kl {} \; | awk -v total=0 ' { total += $5 } END { print total } '
archive C source & header files
find . -name '*.[hc]' | xargs tar cyf src.tar.bz2
find's -delete lets you, well, delete found files: find . -name '._*' -a -delete
