Powerhouse vs UNIX variables and assignments

[Goparaju, Vidyasagar]

Hi Everyone,

Environment - Solaris/UNIX/Powerhouse 8.43.C/Oracle-9i.

In the following example, I am running into issues when I create and try to
write data into a sequential file in the specified directory using a UNIX
variable. 

If I specify the complete path or create the file in my home directory it is
working fine.

;   LET T_ABI_FILE_NAME = 'NP000221.DAT'  				  --
Works fine

;   LET T_ABI_FILE_NAME = '/db0/apps/RUNTIME/ALLDATA/NP000221.DAT'  --
Works fine

    LET T_ABI_FILE_NAME = "$AB4/NP000221.DAT"				  --
Does not work ???

    LET T_COMMAND_LINE = (TRUNC(T_GENRIC_NAME) + ' ' +
TRUNC(T_ABI_FILE_NAME)) - A touch command to create the file
    RUN COMMAND T_COMMAND_LINE
;
; Redirect Generic file
;
@IF UNIX
    if not setsystemval("GENRIC",TRUNC(T_ABI_FILE_NAME))
    then error "Error while setting GENRIC"

    LET T_COMMAND_LINE = "chmod 777 " + TRUNC(T_ABI_FILE_NAME)
    RUN COMMAND T_COMMAND_LINE
@ELSE
    LET T_COMMAND_LINE = (T_GENRIC_DEFINE + ' ' + TRUNC(T_ABI_FILE_NAME))
    RUN COMMAND T_COMMAND_LINE
@ENDIF

$ echo $AB4
/db0/apps/RUNTIME/ALLDATA

-rwxrwxrwx   1 goparaju staff          0 Sep 22 11:56
/db0/apps/RUNTIME/ALLDATA/NP000221.DAT

When I assign $AB4/NP000221.DAT to GENRIC, the file is getting created in
$AB4 (/db0/apps/RUNTIME/ALLDATA ), but I am getting error on PUT GENERIC
(data access error GENRIC, no file name or directory exists).

;   LET T_ABI_FILE_NAME = 'NP000221.DAT'
--  Works fine

;   LET T_ABI_FILE_NAME = '/db0/apps/RUNTIME/ALLDATA/NP000221.DAT'  --
Works fine

    LET T_ABI_FILE_NAME = "$AB4/NP000221.DAT"				  --
Does not work ???

I have verified that the values of UNIX variables are set properly for QUICK
by putting INFO statements with GETSYSTEMVAL.

Please help.

Thanks 
Sagar