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 | To change to a particular directory |
cd / | Move to the root directory |
cat > filename | Creates a new file |
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 |
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 | Creates a new directory in the present working directory or a at the specified path |
rmdir | Deletes a directory |
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 |
lp-d lp-P | Specifies name of the printer |
apt-get | Command used to install and update packages |
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 |