I stopped using relative paths and find long time ago (unless doing interactive work).
This approach is much safer and easier to maintain :
Code:
cd $ABSOLUTE_PATH_DIR && find . <further options and operands> || exit 1
cd -
This way, an error if directory does not exist or permission is denied is printed on stderr.
You will see this error in local mail if running in crontab (if no stderr redirection has been made inside crontab line).
Do not use trailing slashes with directory variables.
Example of things going haywire when doing that :
Code:
set -x
#DIR=/home/user # someone decided to comment this line or makes a mistake.
# more lines of code, hundreds of them
cd $DIR/ && find . -type f .. || exit 1 # This will expand into cd / && find .. # enough said
Decommission -> create a virtual machine out of it - if you can, not some obscure OS/hardware
Good things to do before decommission are (if you cannot virtualize it in lab) :
Copy all crontab and at entries and related scripts used in those.
Issue a mount, output into a file and copy it somewhere safe.
Issue a share into a file (if NFS or other network file systems are exported on the box).
FC and LAN topology should be written down (WWNS, lan port configuration etc.)
/etc/passwd, /etc/shadow, /etc/group, /etc/hosts (perhaps more depending) files should be copied.
All above is done in couple of minutes or less, and is golden for post mortem analysis.
Hope that helps
Regards
Peasant.
Last edited by rbatte1; 10-23-2017 at 07:34 AM..
Reason: Converted to formatted numbered list with LIST=1 tags
These 2 Users Gave Thanks to Peasant For This Post:
I have a backup script that is suppose to run every night of the week, but it never does, it starts to run. The way I can tell is that the dates on dump_log are changing to when the script runs. If I look in the cron log file is shows
! > root 506342 cr /etc/back_up Fri Aug 5 10:30:00... (2 Replies)
Hello
i have a shell script. it is running fine when i manually run at command prompt using following command
./script_file
but while running shell script from crontab, it is giving error in each line. (2 Replies)
Hi,
Could any one help me to extract data from a report.
I would like to get the two lines which are just below the separations
I have a report like this
--------------------------------------------------------------------------
Pid Command Inuse Pin Pgsp Virtual... (2 Replies)
I am adding a piece of code which adds entry in crontab ((in brown color))
\crontab -l > $tmpfile
echo "Removing the cleanProcess entry if it already existed.."
grep -v "cleanProcess.sh" $tmpfile > $newtmpfile
lcnt=`grep -c "cleanProcess.sh" $tmpfile`
echo... (4 Replies)
Executive summary:
Code (posted below) cores in AIX 5.3, despite being compiled and run successfully on several other operating systems. Code is attempting to verify that pthread_mutex_lock can be successfully aborted by siglongjmp. I do not believe this is an unreasonable requirement.
If... (1 Reply)
I am facing a strange issue while running a script(eg A) from the crontab entry
the script calls one more script(eg B) within it
now when i run the script A manually(with nohup) it also executes the script B (embedded inside it) as expected.
but when i run the script A from the crontab entry... (7 Replies)
Helo .
I have 2.6.13-1.1526_FC4smp here.
I am trying to make crontab execute my simple shell script, but noting happens.
here is how i am testing this :
$ pwd
/home/oracle
$ ls -l two*
ls: two*: No such file or directory
$
$ crontab -e
crontab: installing new crontab
$
$ crontab... (7 Replies)
Hi,
I was mucking around with Maven for Eclipse the other day, working on an audio visual project and I was struck by how cool the terminal executing massive amounts of commands is.
I have an odd request. I was wondering if people knew of a terminal script that outputed a lot of data,... (0 Replies)
hi,
i have schduled a job through crontab, but it is not getting executed.
bash-3.2$ crontab -l
# Monthly Download (mm hh DD MM format)
35 05 01 04 * /home/ftpsrp/srpftp1/download/ofrdb/scripts/load_ofrdb.sh crr.sh
here is the permission of the .sh files
-rwxr--r-- 1 ftpsrp srp ... (7 Replies)
I'm having a shell script which has to be run only once at the specified time.
Shell script is like following,
#!/bin/bash
db2 connect to XXX > connection_status.txt
This script is scheduled in crontab as following,
50 4 8 5 0 sh script.sh
scheduled script is run at the specified time... (1 Reply)
Discussion started by: Rajkumar Gandhi
1 Replies
LEARN ABOUT SUSE
crontab
CRONTAB(1) General Commands Manual CRONTAB(1)NAME
crontab - maintain crontab files for individual users (ISC Cron V4.1)
SYNOPSIS
crontab [-u user] file
crontab [-u user] [-l | -r | -e]
DESCRIPTION
Crontab is the program used to install, deinstall or list the tables used to drive the cron(8) daemon in ISC Cron. Each user can have
their own crontab, and though these are files in /var, they are not intended to be edited directly.
If the cron.allow file exists, then you must be listed therein in order to be allowed to use this command. If the cron.allow file does not
exist but the cron.deny file does exist, then you must not be listed in the cron.deny file in order to use this command. If neither of
these files exists, only the super user will be allowed to use this command.
If the -u option is given, it specifies the name of the user whose crontab is to be tweaked. If this option is not given, crontab examines
"your" crontab, i.e., the crontab of the person executing the command. Note that su(8) can confuse crontab and that if you are running
inside of su(8) you should always use the -u option for safety's sake.
The first form of this command is used to install a new crontab from some named file or standard input if the pseudo-filename ``-'' is
given.
The -l option causes the current crontab to be displayed on standard output.
The -r option causes the current crontab to be removed.
The -e option is used to edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. After you exit
from the editor, the modified crontab will be installed automatically.
SEE ALSO crontab(5), cron(8)FILES
/etc/cron.allow
/etc/cron.deny
STANDARDS
The crontab command conforms to IEEE Std1003.2-1992 (``POSIX''). This new command syntax differs from previous versions of Vixie Cron, as
well as from the classic SVR3 syntax.
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
AUTHOR
Paul Vixie <vixie@isc.org>
4th Berkeley Distribution 29 December 1993 CRONTAB(1)
10-22-2017
