# Less known but useful Commmands # Redo last command but as root ```bash sudo !! ``` ## Open an Editor, write a bash command #### (and execute in shell) ```bash ctrl+x+e ``` ## Create superfast Ramdisk ```bash mkdir -p /mnt/ramm mount -t tmpfs tmpfs /mnt/ram -o size=8192M ``` ## fix a really long command #### (that you messed up) ``` bash fc ``` ## quickly create folders ```bash mkdir -p folder/{sub1,sub2}/{sub1,sub2,sub3} ``` ## exit terminal but leave all processes running ```bash disown -a && exit ```