logfileadd <file descriptor>

[root@sylixos:/root]# help logfileadd     
add a file to log file set.
logfileadd [file descriptor]
[root@sylixos:/root]# 

[root@sylixos:/root]# logfileadd 2
[root@sylixos:/root]# logfiles
log fd(s) include :
    1        2
[root@sylixos:/root]#