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