Good vs. Evil
- Thread starter Randomguy404
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51 its the | character. Its very powerful in terminals running bash or other shells like it due to how it allows you to chain commands together.
Lets say I wanted to know if a certain file exists in a folder I could use the "ls" command to list all files and look at it for myself. However I could also write
and if "some_file.txt" was found it will print the line(s) that ls produced containing the filename. IF however it was not found, nothing will be printed. Also, this was just a very basic example to explain how it works.
It also has some other usages in other programming languages, it is often used for a "binary or" operator and by placing 2 of them next to each other (like || ) it often means a logical or.
A logical or written like a = b || c and means that if either b and/or c are true then a is also true. Otherwise, a is false.
For example
which just says that if it is either raining or snowing, we take the car instead of the bicycle.
the binary or (the lonely | I mentioned earlier) works pretty much the same, but then with binary number so I'm not going to explain it and just show 2 binary numbers that go through it instead. Just remember that in binary 1=true and 0 = false and you can already do any 2 numbers on your own
Lets say I wanted to know if a certain file exists in a folder I could use the "ls" command to list all files and look at it for myself. However I could also write
Code:
ls | grep "some_file.txt"It also has some other usages in other programming languages, it is often used for a "binary or" operator and by placing 2 of them next to each other (like || ) it often means a logical or.
A logical or written like a = b || c and means that if either b and/or c are true then a is also true. Otherwise, a is false.
For example
Code:
takes_car_instead_of_bike = it_is_raining || it_is_snowingthe binary or (the lonely | I mentioned earlier) works pretty much the same, but then with binary number so I'm not going to explain it and just show 2 binary numbers that go through it instead. Just remember that in binary 1=true and 0 = false and you can already do any 2 numbers on your own
Code:
1100
1010
--------- |
1110