The Tech Platform
Sep 1, 20211 min
redo the last command but as root
sudo !!
open an editor to run a command (probably a long one)
ctrl + x + e
create a super-fast disk for IO dependent tasks to run on it
mkdir -p /mnt/ramdisk && mount -t tmpfs tmpfs /mnt/ramdisk -o size=8192M
don’t add the command to the history (add one space in front of the command)
ls -l
history # check the history
Fix or change a really long command that you last ran with a text editor
fc
create a tunnel with SSH to port that is not open to the public (local port 8080 -> remote host’s 127.0.0.1 on port 6070)
ssh -L 8080:127.0.0.1:6070 root@my-public-server.com -N
Log output but don’t show it on the console
cat somefile | tee -a log.txt | cat > /dev/null
Exit terminal but leave all processes running
disown -a && exit
Clear your terminal without “clear” command
ctrl + l # L
Paste the arguments of the previous command
alt + -
Completely clean and clear your terminal
reset
Get CPU info quickly
cat /proc/cpuinfo
Get memory info quickly
cat /proc/meminfo
Recursively find a text in a directory that have a lot of files in it
grep -rn /etc/ -e text_to_find
Find files bigger than 100 MB
find -type f -size +100MB -exec ls -lah {} \;
Create a web server in the current directory to serve files from it
python -m SimpleHTTPServer
Find your public IP
curl ifconfig.me
Get a tree view of folders only three levels deep
tree -L 3
Get a tree view of processes
pstree
Use the last command’s last argument
!$
EDIT: (29–08–2021)
Use the last command’s all arguments
!*
The Tech Platform