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Top Forums Shell Programming and Scripting Telnet connection closes before i execute GET command Post 303020586 by Corona688 on Monday 23rd of July 2018 02:16:32 PM
Old 07-23-2018
telnet is interactive. If you don't want interaction, why use it? There's much more appropriate tools.

Answering "why use it" may tell us what you actually need, and by that, an actual solution which may not have been what you expected.

If you absolutely insist on making telnet work interactively you could probably kludge something with expect.
 

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fence_drac(8)						      System Manager's Manual						     fence_drac(8)

NAME
fence_drac - fencing agent for Dell Remote Access Card SYNOPSIS
fence_drac [OPTION]... DESCRIPTION
fence_drac is an I/O Fencing agent which can be used with the Dell Remote Access Card (DRAC). This card provides remote access to control- ling power to a server. It logs into the DRAC through the telnet interface of the card. By default, the telnet interface is not enabled. To enable the interface, you will need to use the racadm command in the racser-devel rpm available from Dell. To enable telnet on the DRAC: [root]# racadm config -g cfgSerial -o cfgSerialTelnetEnable 1 [root]# racadm racreset fence_drac accepts options on the command line as well as from stdin. Fenced sends parameters through stdin when it execs the agent. fence_drac can be run by itself with command line options. This is useful for testing and for turning outlets on or off from scripts. Vendor URL: http://www.dell.com OPTIONS
-a IPaddress IP address or hostname of the switch. -c cmd_prompt Force fence_drac to use cmd_prompt as the command prompt -d dracversion Force fence_drac to treat the device as though it was for the specified drac version -D dumpfile Debug file of the telnet interaction -h Print out a help message describing available options, then exit. -l login Login name. -m modulename The module name of the blade when using DRAC/MC firmware. -o action The action required. reboot (default), off, on or status. -p password Password for login. -S path Full path to an executable to generate the password for login. -f seconds Wait X seconds before fencing is started -V Print out a version message, then exit. STDIN PARAMETERS
action = < param > The action required. reboot (default), off, on or status. agent = < param > This option is used by fence_node(8) and is ignored by fence_apc. cmd_prompt = < param > Force fence_drac to use cmd_prompt as the command prompt drac_version = < param > Force fence_drac to treat the device as though it was for the specified drac version. debug = < dumpfile > Debug file of the telnet interaction ipaddr = < hostname | ip > IP address or hostname of the switch. login = < param > Login name. modulename = < param > The module name of the blade when using DRAC/MC firmware. passwd = < param > Password for login. passwd_script = < param > Full path to an executable to generate the password for login. delay = < param > Wait X seconds before fencing is started SEE ALSO fence(8), fence_node(8) fence_drac(8)
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