How do I use shell commands effectively?

What are some basic shell commands I should know?

Some basic shell commands include ls for listing files, cd for changing directories, and cp for copying files.

Can you explain what the grep command does?

The grep command is used to search for specific patterns within files. For example, grep 'text' filename will find 'text' in the specified file.

How can I combine multiple commands in one line?

You can combine commands using the ; operator. For example, command1; command2 will execute both commands sequentially.

What does the chmod command do?

The chmod command changes the permissions of a file or directory. For example, chmod 755 filename sets the permissions to read, write, and execute for the owner, and read and execute for others.