4.4BSD/usr/share/man/cat8/chroot.0

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CHROOT(8)                 BSD System Manager's Manual                CHROOT(8)

NNAAMMEE
     cchhrroooott - change root directory

SSYYNNOOPPSSIISS
     cchhrroooott _n_e_w_r_o_o_t [_c_o_m_m_a_n_d]

DDEESSCCRRIIPPTTIIOONN
     The cchhrroooott command changes its root directory to the supplied directory
     _n_e_w_r_o_o_t and exec's _c_o_m_m_a_n_d, if supplied, or an interactive copy of your
     shell.

     Note, _c_o_m_m_a_n_d or the shell are run as your real-user-id.

EENNVVIIRROONNMMEENNTT
     The following environment variable is referenced by cchhrroooott:

     SHELL  If set, the string specified by SHELL is interpreted as the name
            of the shell to exec.  If the variable SHELL is not set, _/_b_i_n_/_s_h
            is used.

SSEEEE AALLSSOO
     chdir(2),  chroot(2),  environ(7)

HHIISSTTOORRYY
     The cchhrroooott utility first appeared in 4.4BSD.

4.3 Berkeley Distribution        June 9, 1993                                1