From a Unix viewpoint, running from cron does not set the environment
the same as with an interactive session. I have sometimes had to set
TERM=vt100 (or whatever) and other environment variables to get things
to run from cron.
One trick it to capture your environment to a file, edit out what you
know won't matter and add the rest to the top of your script:
env > env.out
vi env.out
Add
. env.out
To script.
-----Original Message-----
From: G.W. Haywood [mailto:[EMAIL PROTECTED]
Sent: Monday, June 19, 2006 5:53 AM
To: cygwin@cygwin.com
Subject: 1.5.19: tar runs normally from command line but terminates
early when run from crontab
Hi there,
This is my first installation of cygwin, and I'm not very familiar
with W2000 (server or otherwise).
Using ssh from a remote machine I log onto a Windows 2000 server which
is running a freshly installed cygwin. The recommended settings were
used in the installation and in addition to the defaults, a few extra
packages were installed. (Although I couldn't find ntpd anywhere...:)
On my local (Linux) box I get a bash prompt from the W2k server:
[EMAIL PROTECTED] ~
$
On the W2k server there are two physical devices in a simple RAID
array arranged as one logical drive. I want to back up some files
from one of the Windows directories on this logical drive into a file
e.g. in the Administrator account's cygwin /home directory located on
the same logical device. Later, when I have the file, I will copy it
to a remote machine.
To create the file I will use tar. A simple tar command works when it
is run from the Administrator's command line (either in the foreground
or the background) but fails when run from the Administrator account's
crontab.
When run from the command line the job works whether gzip compression
is used or not, and when run from the crontab it fails also whether
compression is used or not, so I don't think it's anything to do with
pipes and DOS/Unix line endings.
It looks like I'm missing something here. What is it?
------------------------------------------------------------------------
--------------------------------------------------------------------
The version of cygwin (installed on 16 June 2006) is: CYGWIN_NT-5.0
1.5.19(0.150/4/2) 2006-01-20 13:28
Process list:
------------------------------------------------------------------------
--------------------------------------------------------------------
[EMAIL PROTECTED] ~
$ ps -aelW
PID PPID PGID WINPID TTY UID STIME COMMAND
8 0 0 8 ? 0 20:24:48 *** unknown ***
184 0 0 184 ? 0 Mar 18
\SystemRoot\System32\smss.exe
204 0 0 204 ? 0 Mar 18
\??\C:\WINNT\system32\winlogon.exe
256 0 0 256 ? 0 Mar 18
C:\WINNT\system32\services.exe
268 0 0 268 ? 0 Mar 18
C:\WINNT\system32\lsass.exe
464 0 0 464 ? 0 Mar 18
C:\WINNT\system32\svchost.exe
520 0 0 520 ? 0 Mar 18
C:\WINNT\system32\spoolsv.exe
724 0 0 724 ? 0 Mar 18
C:\WINNT\System32\msdtc.exe
844 0 0 844 ? 0 Mar 18
C:\WINNT\system32\Dfssvc.exe
864 0 0 864 ? 0 Mar 18
C:\WINNT\System32\svchost.exe
892 0 0 892 ? 0 Mar 18 C:\Data\Program
Files\Autodesk Network License Manager\lmgrd.exe
916 0 0 916 ? 0 Mar 18
C:\WINNT\System32\ismserv.exe
928 0 0 928 ? 0 Mar 18
C:\WINNT\System32\llssrv.exe
976 0 0 976 ? 0 Mar 18 C:\Program
Files\Network Associates\Common Framework\FrameworkService.exe
1060 0 0 1060 ? 0 Mar 18 C:\Program
Files\Network Associates\VirusScan\Mcshield.exe
1088 0 0 1088 ? 0 Mar 18 C:\Program
Files\Network Associates\VirusScan\VsTskMgr.exe
1096 0 0 1096 ? 0 Mar 18 C:\Data\Program
Files\Autodesk Network License Manager\adskflex.exe
1184 0 0 1184 ? 0 Mar 18
C:\WINNT\system32\ntfrs.exe
1252 0 0 1252 ? 0 Mar 18
C:\PVSW\BIN\NTBTRV.EXE
1312 0 0 1312 ? 0 Mar 18
C:\WINNT\system32\regsvc.exe
1316 0 0 1316 ? 0 Mar 18
C:\PVSW\BIN\NTDBSMGR.EXE
1328 0 0 1328 ? 0 Mar 18
C:\WINNT\System32\locator.exe
1340 0 0 1340 ? 0 Mar 18
C:\WINNT\system32\MSTask.exe
1412 0 0 1412 ? 0 Mar 18
C:\WINNT\System32\WBEM\WinMgmt.exe
1424 0 0 1424 ? 0 Mar 18
C:\WINNT\system32\svchost.exe
1436 0 0 1436 ? 0 Mar 18
C:\WINNT\System32\dns.exe
1448 0 0 1448 ? 0 Mar 18
C:\WINNT\System32\inetsrv\inetinfo.exe
1944 0 0 1944 ? 0 Mar 18
C:\WINNT\Explorer.EXE
2012 0 0 2012 ? 0 Mar 18
C:\WINNT\System32\svchost.exe
2156 0 0 2156 ? 0 Mar 18
C:\WINNT\system32\atiptaxx.exe
2168 0 0 2168 ? 0 Mar 18
C:\WINNT\SOUNDMAN.EXE
1904 0 0 1904 ? 0 Mar 18
C:\WINNT\system32\BacsTray.exe
2196 0 0 2196 ? 0 Mar 18 C:\Program
Files\Network Associates\VirusScan\SHSTAT.EXE
2212 0 0 2212 ? 0 Mar 18 C:\Program
Files\Network Associates\Common Framework\UpdaterUI.exe
2244 0 0 2244 ? 0 Mar 18 C:\Program
Files\Silicon Image\SiISATARaid\SATARaid.exe
1540 0 0 1540 ? 0 Mar 18
C:\WINNT\system32\wuauclt.exe
708 0 0 708 ? 0 Jun 1
C:\WINNT\system32\mmc.exe
2324 0 0 2324 ? 0 Jun 1
C:\WINNT\system32\mmc.exe
1384 1 1384 1384 ? 18 Jun 17
/usr/bin/cygrunsrv
2796 1384 2796 2496 ? 18 Jun 17 /usr/sbin/sshd
2792 0 0 2792 ? 0 Jun 17
C:\WINNT\system32\ssstars.scr
2752 2796 2752 2744 ? 18 12:04:19 /usr/sbin/sshd
2508 2752 2508 2928 0 500 12:04:26 /usr/bin/bash
2932 1 2932 2932 ? 500 12:08:36 /usr/sbin/cron
2604 2508 2604 2844 0 500 17:02:36 /usr/bin/ps
------------------------------------------------------------------------
--------------------------------------------------------------------
I note that the UID for the cron process is 500, the same as the one
for the bash shell I'm running. UID 500 appears to be able to read
all the files it needs to read in order to do the backup, as when I
run this command from the Administrator command prompt:
[EMAIL PROTECTED] ~
$ /usr/bin/tar czv --exclude-from=/home/Administrator/filelist.txt
--file /home/Administrator/backup.tgz /cygdrive/c/Data/Jobshop
a file of approximately 337Mbytes is created (which is expected) and
it tests fine.
However when I run the same command from a crontab entry (with or
without the redirection of stderr to the file 'backup.out')
48 16 * * * /usr/bin/tar czv
--exclude-from=/home/Administrator/filelist.txt --file
/home/Administrator/backup.tgz /cygdrive/c/Data/Jobshop
2>/home/Administrator/backup.out
I get a file of approximately 1.2 Mbytes (which is not expected) and
it fails testing:
------------------------------------------------------------------------
--------------------------------------------------------------------
[EMAIL PROTECTED] ~
$ tar tzv --file backup.tgz
dr-xr-xr-x Administrators/Domain Users 0 2006-06-01 14:47:53
cygdrive/c/Data/Jobshop/
-rwxrwxrwx MJ/Domain Users 14706 1998-10-13 08:19:54
cygdrive/c/Data/Jobshop/ACT_STD.ENG
-rwxrwxrwx Administrators/Domain Users 693 1997-11-20 13:05:04
cygdrive/c/Data/Jobshop/BTI.CFG
-rwxrwxrwx Administrators/Domain Users 36077 1994-06-25 12:47:30
cygdrive/c/Data/Jobshop/BTIUTILD.MSG
-rwxrwxrwx Administrators/Domain Users 264497 1994-10-27 13:40:32
cygdrive/c/Data/Jobshop/BTRIEVE.EXE
-rwxrwxrwx Administrators/Domain Users 372 1999-05-11 16:35:26
cygdrive/c/Data/Jobshop/BTRON.BAT
-rwxrwxrwx Administrators/Domain Users 5690 1994-09-08 09:56:36
cygdrive/c/Data/Jobshop/BTSTOP.EXE
-rwxrwxrwx Administrators/Domain Users 30939 1994-09-08 09:56:36
cygdrive/c/Data/Jobshop/BTUTIL.EXE
-rwxrwxrwx Administrators/Domain Users 92812 1994-06-27 14:59:32
cygdrive/c/Data/Jobshop/BUTIL.EXE
-rwxrwxrwx Administrators/Domain Users 4357 1994-06-27 14:56:46
cygdrive/c/Data/Jobshop/BUTILDOS.MSG
-rwxrwxrwx Administrators/Domain Users 8726528 2000-12-22 14:05:34
cygdrive/c/Data/Jobshop/CCCTL.DAT
-rwxrwxrwx Administrators/Domain Users 307200 1997-03-25 04:02:00
cygdrive/c/Data/Jobshop/cg32.dll
-rwxrwxrwx Administrators/Domain Users 4937 2000-12-04 15:14:36
cygdrive/c/Data/Jobshop/Clr_840.dem
-rwxrwxrwx Administrators/Domain Users 4937 1999-09-10 15:18:02
cygdrive/c/Data/Jobshop/CLR_840.ENG
-rwxrwxrwx Administrators/Domain Users 5001 1997-06-02 11:58:00
cygdrive/c/Data/Jobshop/CLR_QMS.ENG
-rwxrwxrwx Administrators/Domain Users 5550 1998-08-03 16:18:46
cygdrive/c/Data/Jobshop/CLR_STD.ENG
-rwxrwxrwx Administrators/Domain Users 5000 1998-08-27 13:05:12
cygdrive/c/Data/Jobshop/Colours.eng
-rwxrwxrwx Administrators/Domain Users 81104 1996-11-20 23:00:00
cygdrive/c/Data/Jobshop/COMDLG16.OCX
-rwxrwxrwx Administrators/Domain Users 129808 1997-07-19 16:00:32
cygdrive/c/Data/Jobshop/COMDLG32.OCX
-rwxrwxrwx Administrators/Domain Users 1191 1999-06-01 11:31:08
cygdrive/c/Data/Jobshop/COPYLIVE.BAT
-rwxrwxrwx Administrators/Domain Users 27136 1995-08-13 23:59:58
cygdrive/c/Data/Jobshop/CTL3D32.DLL
-rwxrwxrwx Administrators/Domain Users 108 1998-06-17 13:08:44
cygdrive/c/Data/Jobshop/CURRENCY.ENG
-rwxrwxrwx Administrators/Domain Users 63 2001-05-16 11:38:32
cygdrive/c/Data/Jobshop/Cuscom.bat
-rwxrwxrwx Administrators/Domain Users 2486 2000-09-08 15:30:54
cygdrive/c/Data/Jobshop/cuscom.ini
-rwxrwxrwx Administrators/Domain Users 47104 1996-05-08 04:59:30
cygdrive/c/Data/Jobshop/D2HTLS32.DLL
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
------------------------------------------------------------------------
---------------------------------
The output from the tar job run by cron and written to the file
backup.out looks quite normal:
------------------------------------------------------------------------
---------------------------------
[EMAIL PROTECTED] ~
$ cat backup.out
/usr/bin/tar: Removing leading `/' from member names
------------------------------------------------------------------------
---------------------------------
Sorry if these long lines wrap for you.
73,
Ged.
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