ls |
Lists all files and directories in the present working directory |
ls-R |
Lists files in sub-directories as well |
ls-a |
Lists hidden files as well |
ls-al |
Lists files and directories with detailed information like permissions,size, owner, etc. |
cd or cd ~ |
Navigate to HOME directory |
cd .. |
Move one level up |
cd / |
Move to the root directory |
cat > filename |
Move to the root directory |
cat filename |
Displays the file content |
cat file1 file2 > file3 |
Joins two files (file1, file2) and stores the output in a new file (file3) |
mv file "new file path" |
Moves the files to the new location |
cd / |
Move to the root directory |
mv filename
new_file_name |
Renames the file to a new filename |
sudo |
Allows regular users to run programs with the security privileges of the superuser or root |
rm filename |
Deletes a file |
man |
Gives help information on a command |
history |
Gives a list of all past commands typed in the current terminal session |
clear |
Clears the terminal |
mkdir directoryname |
Deletes a directory |
rmdir |
Gives a list of all past commands typed in the current terminal session |
mv |
Renames a directory |
pr -x |
Divides the file into x columns |
pr -h |
Assigns a header to the file |
pr -n |
Denotes the file with Line Numbers |
lp -nc , lpr c |
Prints “c” copies of the File |
apt-get |
Specifies name of the printer |
mail -s 'subject' -c 'cc-address'
-b 'bcc-address' 'to-address' |
Command to send email |
mail -s "Subject"
to-address < Filename |
Command to send email with attachment |
