ssh shortcuts

$ nano ~/.ssh/config

Host nickname
<tab> Hostname machine.hostname
<tab> User xxx

tar - Archive contains obsolescent base-64 headers

Problem:
> tar -xvf myfile.tar.gz
tar: This does not look like a tar archive
tar: Skipping to next header
tar: Archive contains obsolescent base-64 headers
tar: Error exit delayed from previous errors

Resolution:
> gzip -d myfile.tar.gz
> tar -xf myfile.tar