On Sun, Jan 28, 2001 at 01:25:51PM -0600, Justin W. Pauler wrote: > I am not sure if this is a command, but if not, I think it would be useful. I > have often needed to watch output from different commands like df, but I have > to continously run the command to get the latest amount. I was thinking, why > couldn't tail do that? Since it can watch files for changes and display > those, why not for a command? > > I tried tail -f |df -h and could not get it to update. I would appreciate > your thoughts. > > I am also cc'ing this to stable in cause it is a bug/feature... Mmm.. methinks you are confused ! The command as you tyoed it will have tail read it;s standard input, the terminal, and pipe it's output into df. Since df is not a filter it will ignore it. If it would work then you would need to change it around to "df | tail -f". However df will only execute once, so that won;t do what you want. To repeatedly execute a command put it in a loop: while : do df done If you want it to wait a while put a sleep in it, to space it out put an echo..e.g. while : do df sleep 2 echo done However, on Linux there is a program called "watch" that repeatedly executes a command an displays it on the screen updating the display "in place" .. so it does not scroll away. I am sure there must be a similar program on BSD (I would like to know as well!) but the program named "watch" on FBSD is something different. Cliff To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-stable" in the body of the message
