Linux for beginners: guide through all terminal commands | CodeLevels

#1.ls: listing files #1

#2.ls -a: hidden files #2

#3.ls -la: owner and permissions #3

#4.ls -latr: sorted, recently modified #4

#5.pwd: current directory #5

#6.cd: change directory ,cd .., cd ~, cd / #6

#7.cd ., cd, cd -, cd d: #7

#8.wc: count lines, words and characters #8

#9.cat: showing the file contents #9

#10.Linux Directories Explained #10

#11.Finding the hidden files: task (cd, pwd, ls, wc, cat) #11

#12.whoami: which user you logged in #12

#13.id: your group #13

#14.sudo: root's permission #14

#15.passwd: change user password #15

#16.sudo passwd root: update root's password #16

#17.exit: leave the subshell #17

#18.su: change user to root #18

#19.su - username: logged in as a user #19

#20.su -c "apt update": run command as a root #20

#21.Task: hack the root's password #21

#22.mkdir: creating folders #22

#23.mkdir -p: nested folders #23

#24.rm, rm -r, rm -rf: removing files and directories #24

#25.Destroying your system (in VM) #25

#26.cp, cp -r: copy files #26

#27.Copying multiple files: cp -v, cp -a, cp -t #27

#28.mv: renaming and moving #28

#29.Handy mv: mv -v, mv -b #29

#30.touch: creating files #30

#31.touch file{1..5}.txt: creating multipe files #31

#32.cat for joining files > #32

#33.cat for creating files >> #33

#34.Writing files with cat 'EOF" #34

#35.cat -A: debugging invisible characters #35

#36.nano for editing files #36

#37.less for reading large files page by page #37

#38.find: [where] [condition] [action] #38

#39.find command #39

#40.grep: advanced search #40

#41.ps, ps aux, ps -ef: processes of your system #41

#42.Handy ps: ps -u, ps sort options #42

#43.top: interactive processes (q, M, P, k, u, H) #43

#44.df, df -h: disk free space #44

Linux for beginners: 50 practical lessons