thanks for the help. now i can able to execute. but i face some issues. any idea. 
C:\>psexec \\vm-ntdivakar2 cleartool mount -all

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it returned error code. 
\ui is already mounted.
\wpg is already mounted.
cleartool exited on vm-ntdivakar2 with error code 1.

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So i got full pathname from the remote machine. 
C:\>psexec \\vm-ntdivakar2 which cleartool

PsExec v1.98 - Execute processes remotely
Copyright (C) 2001-2010 Mark Russinovich
Sysinternals - www.sysinternals.com


C:\Program Files (x86)\Rational\ClearCase\Bin/cleartool.exe
which exited on vm-ntdivakar2 with error code 0.

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Then executed. but still it is returning error code. 
C:\>psexec \\vm-ntdivakar2 "C:\Program Files (x86)\Rational\ClearCase\
+Bin/cleartool.exe" mount -all

\ui is already mounted.
\wpg is already mounted.
C:\Program Files (x86)\Rational\ClearCase\Bin/cleartool.exe exited on 
+vm-ntdivakar2 with error code 1.

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In reply to Re^3: How to execute windows dos command using perl and how to login to another windows machine and execute dos command in that by Divakar
in thread How to execute windows dos command using perl and how to login to another windows machine and execute dos command in that by Divakar

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