[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference turris::digital_unix

Title:	DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:	Welcome to the Digital UNIX Conference
Moderator:	SMURF::DENHAM

Created:	Thu Mar 16 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	10068
Total number of notes:	35879

9809.0. "Error with "at" command ?" by HANDVC::QA () Tue May 13 1997 23:55

    
    I find a problem with the "at" command with digital UNIX V3.2G but the
    problem do not show up on V4.0. Is it a valid problem ?
    
    The symtoms :
    
             I try to use "at" to schedule as follows :
    
             ps | at 1500 may 13
             
          
    
    ,but encounter an error which I received this error message from mailx ?
    
    Do you know the reason? (I had given permission to users to use at
    command)
    
            the message is like that:
    
    /usr/bin/ksh: PID:  not found
    /usr/bin/ksh[2]: syntax error at line 2 : `(' unexpected
    
    what's the workaround ? please advise.
                                                                
    -steve

T.R	Title	User	Date	Lines
9809.1		ATZIS2::au7094.aui.dec.com::wimmer_e	`Wed May 14 1997 09:25`	8
	What are you expecting? "at" reads the commands to be scheduled from stdin. "ps" gives f.e. PID TTY S TIME CMD 551 console IW + 0:00.04 /usr......... Regards Erich
9809.2	Wrong command?	IOSG::MARSHALL	`Wed May 14 1997 10:42`	7
	I suspect .0 meant to do (eg): echo "ps" \| at 1500 may 13 ??? Scott
9809.3	echo "ps" ?	ATZIS2::au7094.aui.dec.com::wimmer_e	`Thu May 15 1997 03:26`	5
	Scott, I'm not a Unix or ksh expert, but I tried it on my Digital Unix 4.0a system and it works perfectly. I think - echo "ps" - doesn't work as expected in your script. Try - echo "ps"\|cat - instead and see what happens. Erich
9809.4	Depends on your expectations?	IOSG::MARSHALL	`Thu May 15 1997 07:39`	13
	Erich, I was assuming the base noter wanted to run the 'ps' command at 1500. So the string "ps" needs to be sent to the stdin of the 'at' command, hence my suggestion in .2, which works as I expect it to (see the examples in that 'at' man page); what were you expecting my command to do? What "works perfectly" on your system? The basenoter's command, which sends the output of an interactive run of 'ps' to 'at'? If that does for some reason work, I'm curious what the results are and in what way they are useful? Ta, Scott
9809.5	sorry	ATZIS2::au7094.aui.dec.com::wimmer_e	`Thu May 15 1997 09:55`	5
	Scott, i misunderstood your reply. I thought you was the originator of the note and told me echo "ps" doesn't work too. echo "ps"\|at .... in any case gives a ps-list at the specified time on my system.