Update ssh.md

Allow agent forward. Useful when working with ssh jumpbox.
Merge pull request #1 from quarcu/patch-1

Update ssh.md
Update ssh.md
Merge pull request #228 from quarcu/master

Update ssh - agent forwarding
Added docs for iconv
Merge pull request #229 from evestera/iconv

Added docs for iconv
automatic compression selection for tar

Using a instead of z,j,J ... makes it easy to use different compression programms
Merge pull request #230 from DanielOertwig/patch-1

automatic compression selection for tar
Merge https://github.com/tldr-pages/tldr