Shells Basics

pwd

which command shows the working directory?

cd

which command changes to a different working directory?

ls

which command lists directory contents?

rmdir

which command removes empty directories?

mkdir

which command creates new directories?

cp

which command copies a directory or a file?

mv

which command moves a directory or a file?

mv

which command renames a file or directory?

rm <file>
rm -r <dir>

which command removes a file or directories?

a program that provides a command line interface; takes text commands as input and shows text based output

what is a shell and what does it do?

text based instructions given to a command line interpreter; yes, by using shell scripts

what are shell commands? can you make new ones? how?

a protocol implemented by client and server for transmitting data securely over a network; an SSH client is a program that implements SSH protocol

what is SSH and how is it different from an SSH client?

text files containing series of shell commands

what is a shell script?