1️⃣ Directory and file management commands
pwd
==> Print Working Directory
ls
==> List Segment
cd
==> Change Directory
cd ..
cd ~
cd -
cd /
cp
==> Copy
mv
==> Mouv
mkdir
==> Make Directory
rmdir
==> Remove Directory
rm
==> Remove
2️⃣ Search commands
grep
=> To search for a file that contains a sentence or a string of characters
find
=> Find a file by his name
locate
=> To do a quick search using a database from the structure of your files
3️⃣ Editing commands
more
less
cat
head
tail
touch
vi
sed
emacs
tee
colrm
cut
tr
cmp
diff
troff
nroff
groff
4️⃣ Print and conversion commands
lp
lpr
lpc
lpq
lprm
gs
gv
a2ps
wvHtml
sox
5️⃣ Other commands
cal
date
wc
spell
read