To change PS1 for every one second


 
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Old 10-31-2007
Question To change PS1 for every one second

I want to change the PS1 prompt with current time.
I want the PS1 to update for every one second.
I write a Script.
PS1='\T'
but it updates after i press enter key.I want to update without pressing enter key.
can any one help me?
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FENCE_AGENT(8)						      System Manager's Manual						    FENCE_AGENT(8)

NAME
fence_virsh - Fence agent for virsh DESCRIPTION
fence_virsh is an I/O Fencing agent which can be used with the virtual machines managed by libvirt. It logs via ssh to a dom0 and there run virsh command, which does all work. By default, virsh needs root account to do properly work. So you must allow ssh login in your sshd_config. fence_virsh accepts options on the command line as well as from stdin. Fenced sends parameters through stdin when it execs the agent. fence_virsh 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://libvirt.org PARAMETERS
-a, --ip=[ip] IP Address or Hostname This parameter is always required. -l, --username=[name] Login Name This parameter is always required. -p, --password=[password] Login password or passphrase -c, --command-prompt=[prompt] Force Python regex for command prompt (Default Value: ['[EXPECT]# ']) -x, --ssh SSH connection (Default Value: 1) -n, --plug=[id] Physical plug number, name of virtual machine or UUID This parameter is always required. -u, --ipport=[port] TCP/UDP port to use for connection with device (Default Value: 22) -4, --inet4-only Forces agent to use IPv4 addresses only -6, --inet6-only Forces agent to use IPv6 addresses only -S, --password-script=[script] Script to retrieve password -k, --identity-file=[filename] Identity file for ssh --ssh-options=[options] SSH options to use (Default Value: -t '/bin/bash -c "PS1=# /bin/bash --noprofile --norc"') -o, --action=[action] Fencing Action (Default Value: reboot) -v, --verbose Verbose mode -D, --debug-file=[debugfile] Write debug information to given file -V, --version Display version information and exit -h, --help Display help and exit -C, --separator=[char] Separator for CSV created by operation list (Default Value: ,) --power-timeout=[seconds] Test X seconds for status change after ON/OFF (Default Value: 20) --shell-timeout=[seconds] Wait X seconds for cmd prompt after issuing command (Default Value: 3) --login-timeout=[seconds] Wait X seconds for cmd prompt after login (Default Value: 5) --power-wait=[seconds] Wait X seconds after issuing ON/OFF (Default Value: 0) --delay=[seconds] Wait X seconds before fencing is started (Default Value: 0) --retry-on=[attempts] Count of attempts to retry power on (Default Value: 1) --use-sudo Use sudo (without password) when calling 3rd party sotfware. ACTIONS
on Power on machine. off Power off machine. reboot Reboot machine. status This returns the status of the plug/virtual machine. list List available plugs with aliases/virtual machines if there is support for more then one device. Returns N/A otherwise. monitor Check the health of fence device metadata Display the XML metadata describing this resource. STDIN PARAMETERS
ipaddr IP Address or Hostname This parameter is always required. login Login Name This parameter is always required. passwd Login password or passphrase cmd_prompt Force Python regex for command prompt (Default Value: ['[EXPECT]# ']) secure SSH connection (Default Value: 1) port Physical plug number, name of virtual machine or UUID This parameter is always required. ipport TCP/UDP port to use for connection with device (Default Value: 22) inet4_only Forces agent to use IPv4 addresses only inet6_only Forces agent to use IPv6 addresses only passwd_script Script to retrieve password identity_file Identity file for ssh ssh_options SSH options to use (Default Value: -t '/bin/bash -c "PS1=# /bin/bash --noprofile --norc"') action Fencing Action (Default Value: reboot) verbose Verbose mode debug Write debug information to given file version Display version information and exit help Display help and exit separator Separator for CSV created by operation list (Default Value: ,) power_timeout Test X seconds for status change after ON/OFF (Default Value: 20) shell_timeout Wait X seconds for cmd prompt after issuing command (Default Value: 3) login_timeout Wait X seconds for cmd prompt after login (Default Value: 5) power_wait Wait X seconds after issuing ON/OFF (Default Value: 0) delay Wait X seconds before fencing is started (Default Value: 0) retry_on Count of attempts to retry power on (Default Value: 1) sudo Use sudo (without password) when calling 3rd party sotfware. fence_virsh (Fence Agent) 2009-10-20 FENCE_AGENT(8)