On Mon, 21 Jan 2002, Shlomi Fish wrote: > On Sun, 20 Jan 2002, Aviram Jenik wrote: > > > Hi, > > > > I'm having the following programming program: I have an app (an external app > > which I cannot modify), that sends info to stdout, which I want to capture. > > If I run the app without redirection, I can see the output coming out > > immediately sent out to the screen. To emphasize: > > $ ./externalApp > > line 1 > > line 2 > > line 3 > > .. > > > > However, if I redirect the input to a file, or pipe it into another app (my > > own), the output only starts to show after ~4 minutes. There's no text > > missing, it just appears 'late'. > > > > This is as if the external app forgot to 'flush' or something. Like I said, > > I can't modify this external app and I have to work around it. > > > > Seems that it forgot to flush. I think there are tools like Perl's > Term::IO and Tcl/Tk's expect that can overcome this and be used to capture > a program's output as soon as it is written. But I'm not sure.
As Aviram has mentioned in his reply $ rpm -qf /usr/bin/unbuffer expect-8.3.3-9.1mdk $ cat /usr/bin/unbuffer #!/usr/bin/expect -- # Description: unbuffer stdout of a program # Author: Don Libes, NIST eval spawn -noecho $argv set timeout -1 expect -- Tzafrir Cohen mailto:[EMAIL PROTECTED] http://www.technion.ac.il/~tzafrir ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
