First time seeing this issue.
Running:
l locale -a l which whoami
The result for this command would be as below:
ns4.xxx% locale -a C POSIX iso_8859_1 ja ja_JP.PCK ja_JP.UTF-8 ja_JP.eucJP ns4.xxx% ns4.xxx% which whoami no whoami in /usr/bin /bin
This was due to inadequate libraries on the Solaris OS.
Some additional info
domain.namep# sh -x ./Splunk_UF_Install_123.sh couldn't set locale correctly SCRIPT_VERSION=2.2.1
