cron makes an internal system call to create a process and start the script. The system call is execv - it "loses" environment variables. This is a very common problem for folks trying to use cron.
If you need environment variables, have cron call a script that sets up what it needs when it starts to run. When you login, if you don't run .profile, .bashrc, .cshrc, or /etc/profile you have no environment to speak of. cron jobs do not execute all of these login scripts by default, so they are like a user that doesn't 'login correctly' in that sense.
try starting your script with stuff like this, which is just an example, not a template:
Code:
#!/bin/ksh
. /etc/profile
. /path/to/.profile
# do your stuff here
I've got an *extremely* simple script I want to run every minute:
#!/bin/sh
ping -c 1 192.168.1.20 > ~/onlinestatus.txt
So, the script is called "status", it's executable, and in the correct path, etc. In a terminal window (I'm using Mac OS X), I can type status, and it will create... (4 Replies)
hello
I use a script to give me the number of users, at each hour.
this script read a file where there is the number of users for each hour and for each month (so 12 files per year).
If i execute the script (root), it is ok, i have xxx users for each hour.
if I put the script in the cron... (1 Reply)
guys
i have written a very simple script .it runs manually well.
but when i put it in cron,it doesn't give the desired output.
script looks like this:
#! /usr/bin/sh
#script for loading data in table using ctl file/Abhijeet K/08.07.2006
/svm_wl1/. .profile
cd... (5 Replies)
I want to cron one script which should run every second Thursday (in general Nth occurence of any day) of every month.
I am not getting the exact idea of doing this; Please guide.
Regards, (3 Replies)
Good morning. I am searching for "how-to"'s for some particular questions:
1. How to write a script in HP-UX 11.
2. How to schedule a script.
3. How to "call" scripts from the original script.
4. How to su to another user from within a script.
This is the basics of what the... (15 Replies)
Dear All,
I have an assignment about collecting /var/adm/messages on each server running Solaris 9. All these servers will be installed with a script that collect all the messages in cron. All the messages will be collected by a single server.
I have a script to collect all the messages, but... (2 Replies)
This has to be the ultimate newbie question...
I have a script that works well. To run it, I cut and paste it into a putty session.
Is there a way to put the script into a file and just run that file -- like a DOS batch file?
I'd like to schedule the file to run daily.
Thanks,... (3 Replies)
Hello gurus,
I am making what I think is a simple db2 call from within a shell script but I am having difficulty producing the desired
report when I run the script shown below from a shell script in cron. For example, my script and the crontab file setup
is shown below:
#!/bin/ksh
db2... (3 Replies)
I have a script that require input from terminal at some point (either a,b or c)
How can I cron the script and automatically assume c as the input. (2 Replies)
Hi All,.
need your expertise, is there a way to create a script that will run with specific time without using cron. because i dont have access in cron.
TIA (19 Replies)
Discussion started by: meister29
19 Replies
LEARN ABOUT ULTRIX
tcp-env
tcp-env(1) General Commands Manual tcp-env(1)NAME
tcp-env - set up TCP-related environment variables
SYNOPSIS
tcp-env [ -rR ] [ -ttimeout ] program [ arg ... ]
DESCRIPTION
The input for tcp-env must be a TCP connection. tcp-env finds out information about that connection, puts the information into several
environment variables as described in tcp-environ(5), and runs program with the given arguments.
Usually tcp-env is run from inetd. It might instead be run from another server that already sets up the right environment variables; if
PROTO is set to TCP when tcp-env is invoked, tcp-env assumes that all the other variables are set up properly, and it does not check
whether the input is a TCP connection.
OPTIONS -r (Default.) Attempt to obtain TCPREMOTEINFO from the remote host.
-R Do not attempt to obtain TCPREMOTEINFO from the remote host.
-ttimeout
Give up on the TCPREMOTEINFO connection attempt after timeout seconds. Default: 30.
SEE ALSO tcp-environ(5), inetd(8)tcp-env(1)