This Flag Day is for users who have installed or bfu-ed build 106 or later, or an archive from Dec 27th or later, which includes this putback for ksh93 update1:
PSARC/2008/094 Korn Shell 93 Integration project update 1 PSARC/2008/344 ksh93 Integration Update 1 Amendments 1 6619428 *ksh93* RFE: Update ksh93 in Solaris to ast-ksh.2008-11-04 (or higher) 6595183 *ksh93* RFE: Update ksh93-integration demo code 6561901 *ksh93* RFE: Add "shcomp" (shell script compiler) + kernel module to exec binary sh code 6599668 *ksh93* RFE: Move consumers of alias.sh over to ksh93 et al You will need to use a new version of bfu, fixed by the recent putback for: 6790805 bfu: needs to deal with /usr/bin/sleep and sum changing to ksh93 scripts after ksh93 update1 The versions of bfu in /ws/onnv-tools/onbld/bin and in the SUNWonbld package in /ws/onnv-gate/public/packages/{sparc,i386} will be updated by the gatekeepers shortly. In the meantime, you can use the new bfu script in the gate now: /ws/onnv-gate/usr/src/tools/scripts/bfu.sh. If you run an older version of bfu, you may see these error messages: ldd: /tmp/bfubin/sleep: unsupported or unknown file type ldd: /tmp/bfubin/sum: unsupported or unknown file type bfuld: /tmp/bfubin/sleep: no ld.so.1 found bfuld: /tmp/bfubin/sum: no ld.so.1 found Unless the older kernel on your system is incompatible with the newly-installed ksh93, the bfu should otherwise work fine.