/usr/bin/fbsvcmgr
/usr/bin/fbtracemgr
/usr/bin/gbak
/usr/bin/gdef
/usr/bin/gfix
/usr/bin/gpre
/usr/bin/gsec
/usr/bin/gsplit
/usr/bin/gstat-fb
/usr/bin/isql-fb
/usr/bin/nbackup
/usr/bin/qli
/usr/sbin/fbguard
/usr/sbin/fb_lock_print
You may install this package on CentOS with
yum
install firebird