cheatsheet

Various commands and snippets that might be needed.

Update all downloaded docker images

docker images |grep -v REPOSITORY |awk '{print $1":"$2}' |xargs -L1 docker pull

Detect all outgoing port blocking

time nmap -p- portquiz.net | grep -i open

Replace string "foo" with "bar" in all files in the directory recursively

find ./ -type f -exec sed -i 's/foo/bar/g' {} \;

Create systemd-boot entry for root at /dev/sda2

string=$"title\tArch Linux\nlinux\t/vmlinuz-linux\ninitrd\t/intel-ucode.img\ninitrd\t/initramfs-linux.img\n" string2="options root=" string3=$(lsblk -Po UUID /dev/sda2 | tr -d '"') && echo -e $string$string2$string3 rw