- Unix command
In my case, It is the first time to hear Unix, so I start to learn with TechTarget and wikipedia.
1. What is Unix?
- UNIX is an operating system (OS) whose development began in the late 1960s at Bell Labs (later AT&T).
- Unix became the first OS that anyone could improve or extend, in part because it was written in C and incorporated many common ideas
- UNIX uses a UI (command line interface, hereafter CLI) based on string-based operations.
2. What is OS？
Abbreviation for "operating system," which connects software (e.g., applications) and hardware (e.g., data storage devices).
3. What is Path?
- A string of characters that represents the location of a specific resource in a computer.
- Location of specific directories, like directions
4. Unix command （at least）
| command | meaning |
|---|---|
| pwd | Where are you? |
| ls | List where you are |
| ls -a | List where you are (including hidden files) |
| ls- al | All List where you are, Vertical (including hidden files) |
| cd | Change directory |
| cd .. | Go up one level to my home directory |
- What is directory？ = folder
- Can reflect (execute) commands only for where you are now.
5. What is "~/” on Unix ?
"~/" refers to the home directory.
6. Unix - File Permission / Access Modes
I learned the file permission with tutorialspoint.
To check the permission status, using command of "ls -l".
With the command, it displays various information related to file permission as follows.
The permissions are broken into groups of threes, and each position in the group denotes a specific permission, in this order: read (r), write (w), execute (x).
If there is the errors in commands is not acceptable, check permission status. And As necessary, change the permission.
7. Terminal
In my case, I open the terminal and input the Unix command.
Before FabAcademy, I almost not use the terminal, so be cautious when using it.