LinuxQuestions.org

LinuxQuestions.org (/questions/)
-   Linux - Newbie (http://www.linuxquestions.org/questions/linux-newbie-8/)
-   -   saving output from FIFO? (http://www.linuxquestions.org/questions/linux-newbie-8/saving-output-from-fifo-603289/)

slimshady 11-29-2007 11:18 AM

saving output from FIFO?
 
Hello, i have a little problem, i have to filter the incoming text from a FIFO, and save it to a file, so i do:
Code:

root@linux-it:/path/to/fifos# cat debug.fifo | grep -v traffic > file
and /path/to/fifos/file is created, but with no contents :S if i do:
Code:

root@linux-it:/path/to/fifos# cat debug.fifo | grep -v traffic
the output from the fifo is filtered and displayed correctly, but i cant save it :S
and if i execute:
Code:

root@linux-it:/path/to/fifos# cat debug.fifo > file
the output gets correctly saved to the file...

(im sure this is a pretty stupid problem, but i dont know how to solve it...)

thanks!

EDIT: It's an issue with the '-v' option, if i exec
Code:

cat debug.fifo | grep Permit > file
it saves the file correctly, any walkarounds?


All times are GMT -5. The time now is 03:28 AM.