luyện

sed - S tream ED itor for filtering and transforming text

cd - C hange the current d irectory

clear - c L ear the terminal screen

tr - translate or delete characters

Sharon McCutcheon on Unsplash "/> wc - print newline, word, and byte counts for each file

Example of creating a 1.5GB swap partition on Arch Linux

xargs - build and execute command lines from standard input

One of my CentOS 7 Core hosts on CloudCone has only 256MB of memory. Here's my note while enable swap partition for it.

paste - merge lines of files

uniq - report or omit repeated lines

grub2 stands for GR and U nified B ootloader 2.

basename - strip directory and suffix from filenames

curl - Transfer a URL

usermod - modify a user account

ssh-copy-id - install your identity.pub public key in a remote machine’s authorized_keys

uptime - Tell how long the system has been running.

seq - print a sequence of numbers

gawk - pattern scanning and processing language

Don't wait. The time will never be just right. — Napoleon Hill

find - search for files in a directory hierarchy