n the initial PowerHA configuration I have a problem with flag of many command:

"Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] -e pattern_list... [-f pattern_file...] [file...]"

This message appears when use command that using script ksh93

AIX 7300-01-02-2320
POWERHA 7.2.7 SP1

Example:
/usr/es/sbin/cluster/utilities/cllog -c 'clstrmgr.debug' -v '/halog'
Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] -e pattern_list...
[-f pattern_file...] [file...]
Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] [-e pattern_list...]
-f pattern_file... [file...]
Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] pattern_list [file...]
Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] -e pattern_list...
[-f pattern_file...] [file...]
Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] [-e pattern_list...]
-f pattern_file... [file...]
Usage: grep [-r] [-R] [-H] [-L] [-E|-F] [-c|-l|-q] [-insvxbhwyu] [-p[parasep]] pattern_list [file...]
After all log directory changes have been made, please perform
a cluster synchronization from this node. This will
ensure that all desired changes have been propagated throughout
the cluster.

Had a couple of similar issues (a long time ago), once it was related to LANG, the other time it was related to LIBPATH/PATH (can't remember which).

If you have someting that seems to be related to ksh93, check your /etc/profile and kshrc ($ENV).  I've seen daft attempts at interactive commands in .kshrc cause all sorts of trouble.

Thank you Josè for your answer.

My /etc/profile is correct and kshrc not present:

# @(#)27        1.20  src/bos/etc/profile/profile, cmdsh, bos730, initial_extract 8/9/94 12:01:38
# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# bos730 src/bos/etc/profile/profile 1.20
#
# Licensed Materials - Property of IBM
#
# COPYRIGHT International Business Machines Corp. 1989,1994
# All Rights Reserved
#
# US Government Users Restricted Rights - Use, duplication or
# disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
#
# IBM_PROLOG_END_TAG
#
# COMPONENT_NAME: (CMDSH) Shell related commands
#
# FUNCTIONS:
#
# ORIGINS: 3, 26, 27
#
# (C) COPYRIGHT International Business Machines Corp. 1989, 1994
# All Rights Reserved
# Licensed Materials - Property of IBM
#
# US Government Users Restricted Rights - Use, duplication or
# disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
#
################################################################

# System wide profile.  All variables set here may be overridden by
# a user's personal .profile file in their $HOME directory.  However,
# all commands here will be executed at login regardless.

trap "" 1 2 3
readonly LOGNAME

# Automatic logout, include in export line if uncommented
# TMOUT=120

# The MAILMSG will be printed by the shell every MAILCHECK seconds
# (default 600) if there is mail in the MAIL system mailbox.
MAIL=/usr/spool/mail/$LOGNAME
MAILMSG="[YOU HAVE NEW MAIL]"

# If termdef command returns terminal type (i.e. a non NULL value),
# set TERM to the returned value, else set TERM to default lft.
TERM_DEFAULT=lft
TERM=`termdef`
TERM=${TERM:-$TERM_DEFAULT}

# If LC_MESSAGES is set to "C@lft" and TERM is not set to "lft",
# unset LC_MESSAGES.
if [ "$LC_MESSAGES" = "C@lft" -a "$TERM" != "lft" ]
then
        unset LC_MESSAGES
fi

export LOGNAME MAIL MAILMSG TERM

trap 1 2 3

Best regards

Massimo