I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
First, I don't understand what is wrong with the script Secondly, I'm surprised that Linux allows this to run unchecked to the detriment of the entire system.
---- SCRIPT ----- #!/bin/sh FTP="/usr/bin/ftp" # VMID="asystem.ourcompany.com" VMUser="STATDASD" VMPass="STATDASD" VMDir="VMSYSA:." DataFile="data.txt" VMFile="DS8100.DATA" #--- Get some information about me #--work from the same directory as the script MYSCRIPT=`$BASENAME $0` MYSCRIPTDIR=`$DIRNAME $0` if [ $MYSCRIPTDIR != "." ] then cd $MYSCRIPTDIR fi #--- FTP to MAINT on mkmfvm $FTP -vn <<$$EOD open $VMID user $VMUser $VMPass cd $VMDir ascii put $DataFile $VMFile bye $$EOD
Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76710
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Perhaps I'm missing it, but where are your definitions of DIRNAME and BASENAME? Without them, you're probably re-executing the script in the bactick references. Basically a fork-bomb. -Alan
Frank M. Ramaekers wrote:
I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
First, I don't understand what is wrong with the script Secondly, I'm surprised that Linux allows this to run unchecked to the detriment of the entire system.
---- SCRIPT ----- #!/bin/sh FTP="/usr/bin/ftp" # VMID="asystem.ourcompany.com" VMUser="STATDASD" VMPass="STATDASD" VMDir="VMSYSA:." DataFile="data.txt" VMFile="DS8100.DATA" #--- Get some information about me #--work from the same directory as the script MYSCRIPT=`$BASENAME $0` MYSCRIPTDIR=`$DIRNAME $0` if [ $MYSCRIPTDIR != "." ] then cd $MYSCRIPTDIR fi #--- FTP to MAINT on mkmfvm $FTP -vn <<$$EOD open $VMID user $VMUser $VMPass cd $VMDir ascii put $DataFile $VMFile bye $$EOD
Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76710
This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at PrivacyAct@ailife.com. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Good catch....not sure how I missed that! (Too many things going on.
THANKS!
Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76710
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Alan Sparks Sent: Tuesday, September 29, 2009 10:27 AM To: CentOS mailing list Subject: Re: [CentOS] Script consumes memory
Perhaps I'm missing it, but where are your definitions of DIRNAME and BASENAME? Without them, you're probably re-executing the script in the bactick references. Basically a fork-bomb. -Alan
Frank M. Ramaekers wrote:
I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
First, I don't understand what is wrong with the script Secondly, I'm surprised that Linux allows this to run unchecked to the detriment of the entire system.
---- SCRIPT ----- #!/bin/sh FTP="/usr/bin/ftp" # VMID="asystem.ourcompany.com" VMUser="STATDASD" VMPass="STATDASD" VMDir="VMSYSA:." DataFile="data.txt" VMFile="DS8100.DATA" #--- Get some information about me #--work from the same directory as the script MYSCRIPT=`$BASENAME $0` MYSCRIPTDIR=`$DIRNAME $0` if [ $MYSCRIPTDIR != "." ] then cd $MYSCRIPTDIR fi #--- FTP to MAINT on mkmfvm $FTP -vn <<$$EOD open $VMID user $VMUser $VMPass cd $VMDir ascii put $DataFile $VMFile bye $$EOD
Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76710
This message contains information which is privileged and confidential
and is solely for the use of the
intended recipient. If you are not the intended recipient, be aware
that any review, disclosure,
copying, distribution, or use of the contents of this message is
strictly prohibited. If you have
received this in error, please destroy it immediately and notify us at
PrivacyAct@ailife.com.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
_______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
_____________________________________________________ This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at PrivacyAct@ailife.com.
Frank M. Ramaekers wrote:
I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
You can probably drastically simplify your script by using ncftpput
http://www.ncftp.com/ncftp/doc/ncftpput.html
nate
nate wrote:
Frank M. Ramaekers wrote:
I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
You can probably drastically simplify your script by using ncftpput
and simplify it even more using scp, assuming the server at the other end is unix or linux and supports ssh/scp. first, exchange ssh-keys, then...
scp $DataFile $VMID:$$VMUser@$VMDir
btw,
if [ $MYSCRIPTDIR != "." then cd $MYSCRIPTDIR fi
is rather redundant. cd . is a no-op, so you might as well just say...
cd $MYSCRIPTDIR
I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
You can probably drastically simplify your script by using ncftpput
and simplify it even more using scp, assuming the server at the other end is unix or linux and supports ssh/scp. first, exchange ssh-keys, then...
scp $DataFile $VMID:$$VMUser@$VMDir
And rsync over ssh is even better, especially if you repeat copies of mostly the same content or there is a chance you will expand to sending a directory full of files.
Frank M. Ramaekers wrote:
I have the following script that when executed, consumes memory and makes the system inaccessible. All process are halted.
First, I don't understand what is wrong with the script Secondly, I'm surprised that Linux allows this to run unchecked to the detriment of the entire system.
Linux allows what you've set with ulimit or the administrator sets in /etc/security/limits.conf.
-
Alan Sparks -
Frank M. Ramaekers -
John R Pierce -
Les Mikesell -
nate