Input/Output Redirection Flashcards
1
Q
How do you use output redirection to append to a file?
A
> >
i.e ls»_space; file
2
Q
How do you use output redirection to overwrite a file?
A
>
i.e ls > file
3
Q
How do you use output redirection to redirect only stdout?
A
1>
1»
4
Q
How do you use output redirection to redirect only stderr?
A
2>
2»
5
Q
How do you use input redirection to redirect to a command?
A
<
i.e head < file
6
Q
How do you use output redirection to redirect stderr and stdout?
A
&>
&»
7
Q
How do you redirect stderr to stdout?
A
2>&1
*useful if piping as they only accept stdout
8
Q
How does piping work?
A
Allows to take stdout and provide it to another command
i.e cat file | wc
9
Q
What location can be redirected to if the output is not needed?
A
/dev/null
*empty character device containing nothing
