Long story, but I need to replace a perl that came with an application with my own compiled perl. It needs to be a drop-in binary compatible version, there are a lot of modules and database drivers that need to work. After I figured out how to make @INC to be the same, I can't figure out what is going on with %ENV. I thought that %ENV came from the shell's environment. But apparently not: 
[root@jove tmp]# ./newperl -e 'print join " ", keys %ENV;print "\n"';
HOSTTYPE LOGNAME MAIL OSTYPE HOME MANPATH SHLVL OLDPWD PWD PATH SSH_TT
+Y TZ PS1 SHELL TERM MACHTYPE ORACLE_HOME _ USER HOSTNAME
[root@jove tmp]# ./oldperl -e 'print join " ", keys %ENV;print "\n"';
PX_ANI_PORT CLASSPATH SATMP PX_USER VERSION SVC_ENTRY_DMGT PX_LOGFILE 
+HOME JAVA_HOME I_MODE PX_OSA_PORT PX_DATASTORE PX_SCLASSDIR PX_GROUP 
+PX_JRN_PORT OSAGENT_PORT PRODVERS PX_PROTOCOL DMGT_START BASEDIR ASAN
+Y PX_BINDIR LANG UPDATE LC_ALL EMAIL PX_WEB_PORT PX_HLPDIR PX_CONFDIR
+ TZ I_CONF_SYSLOG VENDOR PX_DOCURL CWMIBDIR PX_DMGTHOST NMSROOT PSTAM
+P PX_TMPDIR TERM OAMBASE SQLANY PX_DOCDIR PATCHVER SVC_ENTRY_OSA DESC
+ PKGINST PX_DATADIR NAME PKG ASTMP PX_APPDIR PX_LOGDIR ALIAS PX_PORT 
+PKGSAV PX_CGIURL PKGOWNER CLASSES SVC_ENTRY_SSL LD_LIBRARY_PATH PX_CL
+ASSURLPX_CTRBDIR PRODNAME PX_DMGT_PORT PX_CGIDIR NLSPATH INSTDATE BUI
+LD_ID PX_CLASSDIR PX_LIBDIR ARCH CATEGORY PX_HOST SVC_ENTRY_JRN PATH 
+DMGT_PORT HOTLINE SVC_ENTRY_WEB PX_FACILITY
[root@jove tmp]#

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Where are all those extra environment variables coming from in oldperl?

In reply to Where does %ENV come from? by permanentE

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