Instead of worrying about calculating 'a week ago', let cron do that work. Just keep a temp file that you touch whenever you update the data. If the input datafile is newer than your tempfile -- or the tempfile doesn't exist -- you should update.
I have the following cron:
0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57 * * * * /v/sysadmin/sysnet/file.pl
The .pl has been tried at 755 and 777
The script works if manually run by the web browser or unix command prompt, but I can't get the Cron to do it automatically
i went... (3 Replies)
Made changes to a file using vi editor and saved those changes
now realised that the changes are not required
How can I get the previous version of the file.i.e the one which was there on which I had made changes (3 Replies)
Hi all
Recently i had finished a perl script. When i run manually, the script work fine.
But when i wanted to put the script in cron, it didn't get the same output as it run manually. I felt that it only execute the script until certain line then it stop as i see most of the related files didn't... (6 Replies)
Hi,
I want to schedule a job to run every 15 mins through cron.
searched the forums and came up with this piece of code.i have given this in my crontab
0-59/15 * * * * sh /usr/ss/job
But its not being run. Have i made any mistake here.
Can any1 post the cron code for scheduling the... (5 Replies)
Hi!
I have a svn backup script that works perfectly if I execute it from the command line but if I set it as a cronjob to run at night, only part of the code works.
So, basically the scripts starts by deleting the folder yesterday and then moves the folder today to the folder yesterday. When... (4 Replies)
In my cronjob, I would like to schedule my script.sh to run every minutes. I crontab -e and have in line below but it didn't seems to run at all.
* * * * * script.sh
When I run it manually, I can run it. Is that anything wrong with the above line?
If I change it to something like below,... (4 Replies)
Hi,
I need to run a script file which uses a file and that file is modified as and when some alarms generated, it is not based on any fixed time period.. it may be modified even once in a minute for some time and once in 30 min or once in 20 min. Hence i need to watch for the timestamp change of... (3 Replies)
Hi,
I would like to ask some few questions about zenity. I write a script that would generate a report if any changes on the files. i want to used zenity to had a visual alarm report if theres some changes on the comparisons of the file.I used this line of zenity but it doesn't work in cronjob.... (5 Replies)
Hi Friends,
I have a requirement to run the cronjob for every 10 minutes from 2:00 AM to 6:00 AM. Does the below code works? If not, please advise.
* * * * * command to be executed
┬ ┬ ┬ ┬ ┬
│ │ │ │ │
│ │ │ │ │
│ │ │ │ └---------------------------------- day of week (0 - 6) (0 is... (5 Replies)
Discussion started by: srikanthbiradar
5 Replies
LEARN ABOUT LINUX
tempfile
TEMPFILE(1) General Commands Manual TEMPFILE(1)NAME
tempfile - create a temporary file in a safe manner
SYNOPSIS
tempfile [-d DIR] [-p STRING] [-s STRING] [-m MODE] [-n FILE] [--directory=DIR] [--prefix=STRING] [--suffix=STRING] [--mode=MODE]
[--name=FILE] [--help] [--version]
DESCRIPTION
tempfile creates a temporary file in a safe manner. It uses tempnam(3) to choose the name and opens it with O_RDWR | O_CREAT | O_EXCL.
The filename is printed on standard output. See tempnam(3) for the actual steps involved in directory selection.
The directory in which to create the file might be searched for in this order (but refer to tempnam(3) for authoritative answers):
a) In case the environment variable TMPDIR exists and contains the name of an appropriate directory, that is used.
b) Otherwise, if the --directory argument is specified and appropriate, it is used.
c) Otherwise, P_tmpdir (as defined in <stdio.h>) is used when appropriate.
d) Finally an implementation-defined directory (/tmp) may be used.
OPTIONS -d, --directory DIR
Place the file in DIR.
-m, --mode MODE
Open the file with MODE instead of 0600.
-n, --name FILE
Use FILE for the name instead of tempnam(3). The options -d, -p, and -s are ignored if this option is given.
-p, --prefix STRING
Use up to five letters of STRING to generate the name.
-s, --suffix STRING
Generate the file with STRING as the suffix.
--help Print a usage message on standard output and exit successfully.
--version
Print version information on standard output and exit successfully.
RETURN VALUES
An exit status of 0 means the temporary file was created successfully. Any other exit status indicates an error.
BUGS
Exclusive creation is not guaranteed when creating files on NFS partitions. tempfile is deprecated; you should use mktemp(1) instead.
EXAMPLE
#!/bin/sh
#[...]
t=$(tempfile) || exit
trap "rm -f -- '$t'" EXIT
#[...]
rm -f -- "$t"
trap - EXIT
exit
SEE ALSO tempnam(3), mktemp(1)Debian 30 May 2011 TEMPFILE(1)