32v 1m df
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DF(1M) UNIX Programmer's Manual DF(1M)
df - disk free
df [ filesystem ] ...
_D_f prints out the number of free blocks available on the _f_i_l_e_s_y_s_t_e_m_s. If no file system is specified, the free space on all of the normally mounted file systems is printed.
Default file systems vary with installation.