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Full Discussion: Shell Script to end process help
Top Forums UNIX for Dummies Questions & Answers Shell Script to end process help Post 302304089 by methyl on Saturday 4th of April 2009 09:07:56 PM
Old 04-04-2009
I lost the plot on what you are attempting to do.

Quote:
assign1.sh: 14:44:54: not found
Explanation of the error message: Your script is attempting to execute a command called 14:44.54 between the backticks here.

Quote:
current_time=`$current_time | awk -F: '{print $1*60+$2}'`
Without examining the syntax too closely you probably meant to get the contents of $current_time onto the pipe rather than execute $current_time :

Code:
current_time=`echo $current_time | awk -F: '{print $1*60+$2}'`


Quote:
STIME=`ps -u $USERNAME -f | grep $1 | awk -F" " '{print$5}'`
Beware of fuzzy matching with grep. In this line the parameter $1 could match any like number in the "ps -fu $USERNAME" output. For example the parent PID of a subprocess or say some part of the cpu usage. In this form of grep it would find "12" in "61234" or in "12:46".
Tip: "ps -fp${process_id}" would give you the status of that one process.


Sorry to be unhelpful but I believe that this script design is fundamentally flawed because "ps" changes the date format as processes get older and this changes the positional parameters presented to awk.
Login as root have a look at "ps -ef" on a system which has been up for more than 24 hours.
Last edited by methyl; 04-04-2009 at 10:09 PM.. Reason: tags displaced
 

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LEARN ABOUT REDHAT

adsl-connect

ADSL-CONNECT(8) 					      System Manager's Manual						   ADSL-CONNECT(8)

NAME

       adsl-connect - Shell script to manage a PPPoE link

SYNOPSIS

       adsl-connect [config_file]

       adsl-connect interface user [config_file]

DESCRIPTION

       adsl-connect  is  a  shell  script  which  manages  an ADSL connection using the Roaring Penguin user-space PPPoE client.  If you omit con-
       fig_file, the default file /etc/sysconfig/network-scripts/ifcfg-ppp0 is used.  If you supply interface and user,  then  they  override  the
       Ethernet interface and user-name settings in the configuration file.

       Note that normally, you should not invoke adsl-connect directly.  Instead, use adsl-start to bring up the ADSL connection.

       adsl-connect first reads a configuration file.  It then brings up a PPPoE connection.  If the connection ever drops, a message is logged to
       syslog, and adsl-connect re-establishes the connection.	In addition, each time the connection is dropped or cannot be  established,  adsl-
       connect executes the script /etc/ppp/adsl-lost if it exists and is executable.

       The shell script adsl-stop causes adsl-connect to break out of its loop, bring the connection down, and exit.

TECHNICAL DETAILS

       adsl-connect uses the following shell variables from the configuration file:

       ETH    The Ethernet interface connected to the ADSL modem (for example, eth0).

       USER   The ADSL user-id (for example, b1xxnxnx@sympatico.ca).

       PIDFILE
	      A  file in which to write the process-ID of the adsl-connect process (for example, /var/run/pppoe.pid).  Two additional files ($PID-
	      FILE.pppd and $PIDFILE.pppoe) hold the process-ID's of the pppd and pppoe processes, respectively.

       By using different configuration files with different PIDFILE settings, you can manage multiple PPPoE connections.  Just specify  the  con-
       figuration file as an argument to adsl-start and adsl-stop.

AUTHOR

       adsl-connect was written by David F. Skoll <dfs@roaringpenguin.com>.

       The pppoe home page is http://www.roaringpenguin.com/pppoe/.

SEE ALSO

       pppoe(8),  adsl-start(8),  adsl-stop(8),  pppd(8),  pppoe.conf(5),  adsl-setup(8),  adsl-status(8), pppoe-sniff(8), pppoe-server(8), pppoe-
       relay(8)

4th Berkeley Distribution					 21 February 2000						   ADSL-CONNECT(8)
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