-5
votes
2answers
66 views

What is the utility of piping to `/dev/null`?

Seeing that /dev/null's utility isn't immediately obvious to me, what is the use of /dev/null piping?
2
votes
2answers
80 views

Show a sliding window of output from a program

I want to run a command (rsync -av) and only display 10 lines of output at any time. I have found a similar post, but I don't want to redirect it to a file. I want the output to be displayed ...
1
vote
1answer
81 views

Pipe not picking up stdout

I am running a java program from a OS X 10.8 bash terminal, and are trying to rederect the output it is producing. However, when either running this throug a pipe, or rederecting it to a file, the ...
1
vote
2answers
2k views

How can I get vsftpd version into shell variable?

I want to get vsftpd version into shell variable. I can get it to console with ease: # vsftpd -version vsftpd: version 2.2.2 Also I can get a lot of other info into variable: # i=`bash --version ...