crontab 報錯

huoniao

我做了一個定時備份
root#[/]crontab -l
39 16 * * * fbackup -f /dev/rmt/0m -i /etc/group
卻得到了mai如下:root#[/]mail
From root@root Sat Jan 10 16:39:31 EAT 2004
Received: (from root@localhost)
by root (8.9.3/8.9.3) id QAA28358
for root; Sat, 10 Jan 2004 16:39:31 +0800 (EAT)
Date: Sat, 10 Jan 2004 16:39:31 +0800 (EAT)
From: root@root
Message-Id: <200401100839.QAA28358@root>;
Subject: cron

fbackup(1004): session begins on Sat Jan 10 16:39:01 2004
fbackup(3203): volume 1 has been used 3 time(s)
fbackup(3024): writing volume 1 to the output file /dev/rmt/0m
fbackup(3055): total file blocks read for backup: 15
fbackup(3056): total blocks written to output file /dev/rmt/0m: 39


*************************************************
Cron: 前面的信息是標準輸出
和您的一個 crontab 命令的標準錯誤:

fbackup -f /dev/rmt/0m -i /etc/group

這到底是怎么回事?謝謝指點!

huoniao

為什么各位老大不理我啊,ding

Shad

Your cron and fbackup do not have problem. The mail you received is a notification of the cron job, it's not an error.

huoniao

Cron: 前面的信息是標準輸出
和您的一個 crontab 命令的標準錯誤:

fbackup -f /dev/rmt/0m -i /etc/group

那提示中的標準錯誤是什么意思啊?謝謝

Shad

That is normal.

The "標準錯誤" is just standard error, that is a Unix term. You know what is standard input (usually your keyboard), standard output(usually your terminal or console), standard error (the place that your process' errors go), right?

When you use cron, you did not redirect the standard error to anywhere else, so it just remind you the standard error is included in the email.

Nothing is wrong in your cron job and your fbackup.

rat326

樓主：你的cron沒問題。Standard error（標準錯誤）是正常的輸出。

哈哈呵呵

重定向輸出試試！

day_dream

正常mail