1. Redo last command but as root sudo !! 2. Open an editor to run a command ctrl+x+e 3. Create a super fast ram disk mkdir -p /mnt/ram mount -t tmpfs tmpfs /mnt/ram -o size=8192M 4. Don't add command to history (note the leading space) ls -l 5. Fix a really long command that you messed up fc 6. Tunnel with ssh (local port 3337 -> remote host's 127.0.0.1 on port 6379) ssh -L 3337:127.0.0.1:6379 root@emkc.org -N 7. Quickly create folders mkdir -p folder/{sub1,sub2}/{sub1,sub2,sub3} 8. Intercept stdout and log to file cat file | tee -a log | cat > /dev/null Run command in background bgor end with command with & or ctrl+z if it is a running in foreground to bring back latest command to foreground fg bring back specific job id fg %1 list background jobs jobs -l Exit terminal but leave all processes running disown -a && exit disown specific job disown %1
