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hash -r echo ${BASH_CMDS[@]} hash -p /usr/sbin/foo foo hash -p /usr/local/bin/qux qux echo ${!BASH_CMDS[@]} echo ${BASH_CMDS[@]} BASH_CMDS[blat]=/sbin/blat BASH_CMDS[sh]=/bin/sh hash echo ${!BASH_CMDS[@]} echo "${BASH_CMDS[@]}"