Need a command to remove the last word in the first line of a file

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Depending of the purpose, if you are in a shell script and need to do this, you might:-

while read line
   cut_line="${line% *}"                        # Note that the space is the literal space in the input line
   echo "This is the value of \$cut_line \"${cut_line}\""
done < op.txt

Of course, you could do other things within the loop should you choose.

I hope that this helps,
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remove profile(1m)														remove profile(1m)

remove profile - Removes all profile elements and the profile from the specified name service entry SYNOPSIS
rpccp remove profile profile-entry-name [-s syntax] OPTIONS
Indicates the name syntax of the entry name (optional). The only value for this option is the dce name syntax, which is the default name syntax. Until an alternative name syntax becomes available, specifying the -s option is unnecessary. ARGUMENTS
Indicates the name of the target profile. For an entry in the local cell, you can omit the cell name and specify only the cell-relative name. DESCRIPTION
The remove profile command removes a profile (and all of its elements) from the name service database. The entry name of the profile is required. Privilege Required You need write permission to the CDS object entry (the target profile entry). NOTE
This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE. EXAMPLES
The following commands run RPCCP and remove the profile named /.:/LandS/anthro/molly_o_profile: $ rpccp rpccp> remove profile /.:/LandS/anthro/molly_o_profile RELATED INFORMATION
Commands: add element(1m), remove element(1m), show profile(1m) remove profile(1m)

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