Here's what I do on z/OS (I know, I know).
Perhaps you could script up something similar on whatever platform you're on:
// JOB
//L1 SET AG='"Daily sales invoices"'
//L2 SET H=ARCH950
//L3 SET LOADID=5052-1-0-92FAA-0-0-5053
//STEP1 EXEC PGM=ARSADMIN,REGION=0M,
// PARM=('/unload -h &H -g &AG -L &LOADID -u odv733 -p cmodrocks')
//STEPLIB DD DISP=SHR,DSN=ARS.ARSV950.SARSLOAD
//SYSPRINT DD SYSOUT=*
//SYSOUT DD SYSOUT=*
//ARSBIN DD PATH='/usr/lpp/ars/V9R5M0/bin'
//SYSPRINT DD SYSOUT=*,DCB=(RECFM=FBA,LRECL=134,BLKSIZE=134)
//SYSOUT DD SYSOUT=*
Ed