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Groups > comp.os.linux.misc > #88837

Re: Something Odd - "top" Delivers Nada When Run By Crontab

From Eli the Bearded <*@eli.users.panix.com>
Newsgroups comp.os.linux.misc
Subject Re: Something Odd - "top" Delivers Nada When Run By Crontab
Date 2026-07-11 05:46 +0000
Organization Some absurd concept
Message-ID <eli$2607110146@qaz.wtf> (permalink)
References <BxedncNO6-XMIsz3nZ2dnZfqnPadnZ2d@giganews.com>

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In comp.os.linux.misc, c186282  <c186282@nnada.net> wrote:
> Run the script from the CL and it works perfectly.
> 
> Run it via root crontab though and the top redirect
> file exists, but is EMPTY.

The environment variables for cron jobs are usually nearly empty.
Anytime something works from the shell but not from cron, check
environment variables.

Here's a tip: your cron scripts should work with _no_ environment
variables at all. To run them that with, use `env -i`. When I run
`env -i top` I get _no_ output at all.

The "-b" option suggested in another post fixes the no output problem.

Elijah
------
top probably wants $TERM set when not in batch mode

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Thread

Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-10 23:57 -0400
  Re: Something Odd - "top" Delivers Nada When Run By Crontab Rich <rich@example.invalid> - 2026-07-11 04:34 +0000
    Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-11 01:38 -0400
      Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-11 01:51 -0400
  Re: Something Odd - "top" Delivers Nada When Run By Crontab Eli the Bearded <*@eli.users.panix.com> - 2026-07-11 05:46 +0000
    Re: Something Odd - "top" Delivers Nada When Run By Crontab Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-11 05:57 +0000
      Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-11 02:08 -0400
      Re: Something Odd - "top" Delivers Nada When Run By Crontab Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-12 06:46 +0000
        Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-12 22:10 -0400
    Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-11 02:04 -0400
  Re: Something Odd - "top" Delivers Nada When Run By Crontab rbowman <bowman@montana.com> - 2026-07-11 06:40 +0000
    Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-11 22:54 -0400
      Re: Something Odd - "top" Delivers Nada When Run By Crontab rbowman <bowman@montana.com> - 2026-07-12 03:00 +0000
        Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-12 19:23 -0400
      Re: Something Odd - "top" Delivers Nada When Run By Crontab Rich <rich@example.invalid> - 2026-07-12 03:36 +0000
        Re: Something Odd - "top" Delivers Nada When Run By Crontab c186282 <c186282@nnada.net> - 2026-07-12 19:25 -0400
          Re: Something Odd - "top" Delivers Nada When Run By Crontab The Natural Philosopher <tnp@invalid.invalid> - 2026-07-13 10:01 +0100

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