$ env -i PERL5LIB=.local/lib/perl5 perl ./do_shell_source.pl
{
    _                 "/usr/bin/perl",
    INCLUDE           "~/sybsdk/OCS-20_0/include:",
    LD_LIBRARY_PATH   "~/sybsdk/DataAccess64/ODBC/lib:~/sybsdk/DataAccess/ODBC/lib:~/sybsdk/OCS-20_0/lib:~/sybsdk/OCS-20_0/lib3p64:~/sybsdk/OCS-20_0/lib3p:",
    LIB               "~/sybsdk/OCS-20_0/lib:",
    PATH              "~/sybsdk/tools/bin:~/sybsdk/OCS-20_0/bin:/usr/local/bin:/usr/bin",
    PERL5LIB          ".local/lib/perl5",
    PWD               "/tmp",
    SAP_JRE8          "~/sybsdk/shared/SAPJRE-8_1_062_64BIT",
    SAP_JRE8_64       "~/sybsdk/shared/SAPJRE-8_1_062_64BIT",
    SHLVL             0,
    SYBASE            "~/sybsdk",
    SYBASE_OCS        "OCS-20_0",
    SYBROOT           "~/sybsdk"
}
$