Commands using ssh (347)

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Ping all hosts on 192.168.1.0/24
Pings all the hosts on 192.168.1.0/24 in parallel, so it is very fast. Alive host IP addresses are echoed to stdout as pings are responded to.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Check command history, but avoid running it
!whatever will search your command history and execute the first command that matches 'whatever'. If you don't feel safe doing this put :p on the end to print without executing. Recommended when running as superuser.

Rank top 10 most frequently used commands

Use bash history with process substitution
Bash has a great history system of its commands accessed by the ! built-in history expansion operator (documented elsewhere on this site or on the web). You can combine the ! operator inside the process redirection

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Comparison between the execution output of the last and penultimate command
Useful for checking if there are differences between last and penultimate command.

check the filesystem and use a progress bar
if you happen to start with out the -C switch then you a killall -USR1 e2fsck

Check the current price of Bitcoin in USD

change up n directories
Change n directories up, without parameters change one up


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