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Emacs can edit remote files transparently (as if they were local).
Whenever Emacs asks for a file, you can indicate a remote file like so: /myname@remotehost:/remote/path/to/file. Emacs retrieves the file over SSH, FTP, or another method and takes care of saving it when you're done.
Emacs can record macros and execute them over a region.
use C-x-( to start recording
use C-x-) to end recording
use <esc>-x -> apply-macro-to-region-lines
kmacro-start-macro C-x ( Command: Record subsequent keyboard input, defining a keyboard macro. kmacro-end-macro C-x ) Command: Finish defining a keyboard macro. kmacro-end-or-call-macro <f4> Command: End kbd macro if currently being defined; else call last kbd macro. apply-macro-to-region-lines M-x ... RET Command: Apply last keyboard macro to all lines in the region. call-last-kbd-macro M-x ... RET Command: Call the last keyboard macro that you defined with \[start-kbd-macro].