print working directory
pwd
my computer’s network name
hostname
Make directory
mkdir
change directory
cd
list directory
ls
remove directory
rmdir
push directory
pushd
pop directory
popd
copy a file or directory
cp
move a file or directory
mv
page through a file
less
print the whole file
cat
execute argument
xargs
find files
find
find things inside files
grep
read a manual page
man
find what man page is appropriate
apropos
look at your environment
env
print some arguments
you can use this command to write and overwrite data to a file using command line in terminal
echo
echo “hello you” test.txt
this will overwrite any existing data in file test.txt with text hello you.
export/ set a new environment variable
export
exit the shell
exit