Your guess is my guess. Somehow the cron entry is taking the parmeter 2 as redirection (to /dev/null). Actually I tested with assigning $1 to a variable immediately also inside the script. That did not work either.
Reply to sb008:
Here is the ouput from test.sh script you provided.
3
1 2 3
1 2 3
Reply to Perderabo:
There is nothing special in .profile, except export statements for Oracle.
Still could not figure out what the problem was. Any help is appreciated.
Thanx..
-Bheem
Clearly the arguments are passed correctly to the script. Also the count for the number of arguments is correct.
As Perderabo stated the most likely candidate to cause your problem is the ".profile".
I'm a newbie in scripting attempting to create a script where i can submit a job (in maestro/tivoli) with parameters,in maestro CLI i can do that no problem,i'm thinking about creating a script that will accept input while the script is executing, more like below structure:
exec the script
-... (1 Reply)
I am trying to setup cronjob and once I start to save it is not working. This is what I am getting after I executed crontab -e, I am not even getting the privious entry and I am running from root.
crontab -e
421
10 3 * * * /usr/sbin/logadm
?
:wq
?
Why is it not saving? Any input is... (4 Replies)
new to unix here, im learning how to schedule jobs with crontab. The following cron job runs under root but not under a test account i created.
50 11 * * 0 /usr/bin/banner "HELLO" > /dev/console
i have no idea with it isn't running under the test account but runs right on time when i create... (7 Replies)
I have a simple procedure which accepts two input parms and returns and output count:
CREATE OR REPLACE Procedure GET1 ( IN_FOLDER IN VARCHAR2,
IN_SUBJECT_AREA IN VARCHAR2,
OUT_CNT IN OUT VARCHAR2
)
AS
BEGIN
... (2 Replies)
Hello All,
I want to run a script for every 5 minutes interval.So i developed a script which has to be scheduled to run for every 5 minutes. That script internally runs another script. But the problem is it is not executing properly. Can anybody throw some light on this.
Below are the code... (4 Replies)
I have created a cron job for the vtiger workflow to execute the shell file named com_vtiger_workflow.sh to run the workflow.
I've created the following line in crotab -e :
00 13 * * * /var/www/html/prashant/cron/modules/com_vtiger_workflow/com_vtiger_tiger_workflow.sh | mail -s 'Check... (2 Replies)
Hi ,
I have a TCL script which i am supposed to run as a cron job..
The script works fine from command line , but when run as a cron job , its unable to find a package,,
my crontab is as follows.
---------------------------
#!/usr/bin/ksh
* * * * * PATH=/cm8/auto/Automation/Library/TclLib
... (7 Replies)
I have a perl script which Im planning to run every minute.
I have set the cron job as
* * * * * PATH= /usr/local/bin:/usr/bin:/usr/sbin:/usr/lib; perl /dm2/www/html/isos/pre5.3/autoDownload.pl
I assume the script is executing every minute only because I see a entry like below when I do... (2 Replies)
When i am trying to open crontab throught command crontab -e. It is not opening?
OUTPUT:
# crontab -e
sh: vim: not found
The crontab file was not changed.
Please let me know how to open and edit it??? (10 Replies)
HI,
I have written an executable file in unix and I was able to execute it successfully but when I called this file with cron job it was giving error like "permission denied" and "No such file or directory".
Please help in how cron calls the file and what permission is required on the file... (2 Replies)
Discussion started by: vipin kumar rai
2 Replies
LEARN ABOUT PLAN9
flock
FLOCK(1) User Commands FLOCK(1)NAME
flock - manage locks from shell scripts
SYNOPSIS
flock [options] file|directory command [arguments]
flock [options] file|directory -c command
flock [options] number
DESCRIPTION
This utility manages flock(2) locks from within shell scripts or from the command line.
The first and second of the above forms wrap the lock around the execution of a command, in a manner similar to su(1) or newgrp(1). They
lock a specified file or directory, which is created (assuming appropriate permissions) if it does not already exist. By default, if the
lock cannot be immediately acquired, flock waits until the lock is available.
The third form uses an open file by its file descriptor number. See the examples below for how that can be used.
OPTIONS -c, --command command
Pass a single command, without arguments, to the shell with -c.
-E, --conflict-exit-code number
The exit code used when the -n option is in use, and the conflicting lock exists, or the -w option is in use, and the timeout is
reached. The default value is 1.
-F, --no-fork
Do not fork before executing command. Upon execution the flock process is replaced by command which continues to hold the lock.
This option is incompatible with --close as there would otherwise be nothing left to hold the lock.
-e, -x, --exclusive
Obtain an exclusive lock, sometimes called a write lock. This is the default.
-n, --nb, --nonblock
Fail rather than wait if the lock cannot be immediately acquired. See the -E option for the exit code used.
-o, --close
Close the file descriptor on which the lock is held before executing command. This is useful if command spawns a child process
which should not be holding the lock.
-s, --shared
Obtain a shared lock, sometimes called a read lock.
-u, --unlock
Drop a lock. This is usually not required, since a lock is automatically dropped when the file is closed. However, it may be
required in special cases, for example if the enclosed command group may have forked a background process which should not be hold-
ing the lock.
-w, --wait, --timeout seconds
Fail if the lock cannot be acquired within seconds. Decimal fractional values are allowed. See the -E option for the exit code
used. The zero number of seconds is interpreted as --nonblock.
--verbose
Report how long it took to acquire the lock, or why the lock could not be obtained.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
EXAMPLES
shell1> flock /tmp -c cat
shell2> flock -w .007 /tmp -c echo; /bin/echo $?
Set exclusive lock to directory /tmp and the second command will fail.
shell1> flock -s /tmp -c cat
shell2> flock -s -w .007 /tmp -c echo; /bin/echo $?
Set shared lock to directory /tmp and the second command will not fail. Notice that attempting to get exclusive lock with second
command would fail.
shell> flock -x local-lock-file echo 'a b c'
Grab the exclusive lock "local-lock-file" before running echo with 'a b c'.
(
flock -n 9 || exit 1
# ... commands executed under lock ...
) 9>/var/lock/mylockfile
The form is convenient inside shell scripts. The mode used to open the file doesn't matter to flock; using > or >> allows the lock-
file to be created if it does not already exist, however, write permission is required. Using < requires that the file already
exists but only read permission is required.
[ "${FLOCKER}" != "$0" ] && exec env FLOCKER="$0" flock -en "$0" "$0" "$@" || :
This is useful boilerplate code for shell scripts. Put it at the top of the shell script you want to lock and it'll automatically
lock itself on the first run. If the env var $FLOCKER is not set to the shell script that is being run, then execute flock and grab
an exclusive non-blocking lock (using the script itself as the lock file) before re-execing itself with the right arguments. It
also sets the FLOCKER env var to the right value so it doesn't run again.
EXIT STATUS
The command uses sysexits.h return values for everything, except when using either of the options -n or -w which report a failure to
acquire the lock with a return value given by the -E option, or 1 by default.
When using the command variant, and executing the child worked, then the exit status is that of the child command.
AUTHOR
H. Peter Anvin <hpa@zytor.com>
COPYRIGHT
Copyright (C) 2003-2006 H. Peter Anvin.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO flock(2)AVAILABILITY
The flock command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux July 2014 FLOCK(1)