File Management
umask 077 # permissions mask that ensures any new files you create in that shell session are readable and writable only by you, and not accessible to group members or others.
A Faster Way To Copy Files From One Machine To Another Through SSH
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ssh gpc1 'tar -C /tmp -cf - MY_DIR' | tar -C . -xf -
- This Command walks through the entire directory, and creates a tar stream that writes to stdout. SSH will execute this command, and carry that stream to the local
tarextraction. taronly reads files in the directory and writes to stream, so it’s not likescpwhich also deals with timestamp, checksum, file skipping logic.rsyncis fast, but it still:- builds a file list on both sides
- compares files: size, mime, perms, etc.
- may do checksum logic (depending on flags)
- lots of small protocol messages.
- So if you want a fresh copy, rsync’s incremental file delta method doesn’t do much.
