alx-system_engineering-devops

0x00-shell_basics

file navigation using cd command
listing contents using ls
mkdir to create directories
moving and copying files/directories using mv and cp commands
identifying file types using the file command
creating links using ln command: hard links and soft links
wild cards
creating magic files

0x01-shell_permissions

switching users using su command
changing file permission and ownership using chmod, chown, chgrp: users, groups and permissions
remote connection using telent command

0x02-shell_redirections

wc, head and tail commands
searching commands like find, grep
text manipulating commands like cat, sort, uniq, rev, cut, tr
what is the difference between /etc/shadow and /etc/passwd
special characters
the -exec option

0x03-shell_variables_expansions

alias, printenv, set, export, unset, source, ., printf, tr, grep
shell arithmetic
init files
sourcing