The other day Carl made a useful comment:
Terminals and command lines scare me. Do you have any dev tips on getting started with these or know any good resources?
And it made me realize, I also was scared to use the Terminal at one point. It is one of these things wherein the beginning, you just don't know what's happening.
So let's walk through some basic commands today, which will make us more comfortable in using the Terminal.
Which Terminal to Use? permalink
Perhaps a good starting point is which Terminal to use, to be honest, it's much of a preferred choice than actually making a difference. But I use iTerm2 which works beautiful!
If you rather stick to another choice or the default Terminal, be my guest, it won't make a difference in what we are going to do today.
Basic Terminal Commands permalink
Oke, let's get cracking on some commands.
Bash Change Directory permalink
cd command means
change-directory, and it is the same as clicking on a folder on your regular desktop.
cd Desktop // move into the desktop "folder"
We can also go up one level by using
// Or even multiple levels
We can always go back to the starting point by using
cd without arguments.
Bash Where are We? permalink
Every now and then, you forgot where you are, and you want to know what the current folder is.
You can use the
Print Working Directory
pwd // Return something like: /Users/chrisbongers/Desktop
Bash List permalink
Another handy command is
ls it means
list and can we used to show folders inside the directory we are in.
ls // Show current directory
ls .. // Show parent directory
ls Desktop // Show specific directory
Bash Creating Folders permalink
Sometimes it's easier to create a folder in the Terminal because you are already there.
We can use
make directory for this.
Bash Removing permalink
Be careful when using remove commands. The Terminal is strong and can remove system files, so use these with care.
We can use
Remove Directory to remove a folder
Or we can use
Remove in general
rm command we can give it the
-r parameter which stands for
recursive it will delete everything inside the folder you pass
rm -r NewApp
Bash Copy permalink
We can also copy folders and files with the Terminal by using the
cp testfile.txt test2.csv
Where the first argument is the source and the second the destination file.
We can also copy a complete folder and contents:
cp -r NewApp TestApp
Bash Move permalink
Another excellent command is
Move. It works the same as the
cp one but will move the elements instead of copying them.
mv testfile.txt Desktop/testfile2.txt
As you can see, we can even move and rename.
Bash Creating Files permalink
Perhaps the most interesting one is the ability to create files. There are multiple ways of creating files, the most common is
touch, but my personal favorite is
Nano works great because it's generic, it can create but also edit a file at the same time.
nano testfile.txt // Will create the file and open it!
Once you opened a file in
nano you can type whatever you want, and once your done, use
CTRL+X to close and save the file.
I hope these Terminal commands were helpful, and I challenge you to have a play around with these.
Let me know in the comments if there are any really good ones I might have missed.