4
votes
1answer
65 views

unexpected output with grep

I am using pyrit. For those who dont know, pyrit allows among other things to check if a wpa handshake key is valid: pyrit -r file0.cap analyze when a file does not contain a valid key, here is ...
1
vote
0answers
16 views

Test execution output of a command before a pipe [duplicate]

I would like to test the execution of a php script that redirect its stdout and stderr to a file with tee. php /path/to/script --param 2>&1 | tee -a /path/to/log if ( test $? -ne 0 ); then ...
1
vote
1answer
107 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 ...
2
votes
1answer
116 views

Stderr of piped shell scripts isn't always displayed

I piped my own shell scripts for some testing and accidentally noticed something strange. Namely, the stderr of those piped processes isn't always displayed on the screen. I simplified the scripts ...
3
votes
1answer
173 views

Why doesn't “cvs --help | less” work?

I don't know why, but piping cvs --help to less doesn't work. Probably it's because cvs --help outputs not to standard output(1) or error output(2), but somewhere else. Could you tell me where does it ...