This section gives insight into the most important commands. There are many more commands than listed in this blog. Along with the individual commands, parameters are listed and, where appropriate, a typical sample application is introduced. To learn more about the various commands, use the manual pages,with these commands.
cat - Display file’s contents to the standard output device.
cd - Change to directory.
mkdir - This will create a new directory.
rm - The rm command will remove a specific file.
sudo - This command is used to give the root access to access files.
vi editor - Vi is the inbuilt linux text editor to write Source codes.
head - The head command prints the first line of the file.
tail - The tail command prints the last line of the file.
grep - This command is used to search the files or find text inside the file.
Syntax : grep text_to_find filename.
ping - Shows how long it takes for packets to reach host.
chmod - change file modes and to give file permission.
logout - Logs the current user off the system.
locate filename - Search a copy of your filesystem for the specified filename.
rmdir - delete empty directories.
kill - If the process refuses to stop, use kill -9 pid.
man - Display the help information for the specified command. lpr - Send a print job. ls - List directory contents.
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