我正在尝试在 OS X（El Capitan，v10.11.3）终端（bash shell）中做一个简单的输出重定向，并在输出中得到一堆不需要的字符。这不会发生在 Linux 上。
例如，如果我输入man open > open.txt，我会得到以下信息：
OPEN(1) BSD General Commands Manual OPEN(1)
NNAAMMEE
ooppeenn -- open files and directories
SSYYNNOOPPSSIISS
ooppeenn [--ee] [--tt] [--ff] [--FF] [--WW] [--RR] [--nn] [--gg] [--hh] [--bb _b_u_n_d_l_e___i_d_e_n_t_i_f_i_e_r]
[--aa _a_p_p_l_i_c_a_t_i_o_n] _f_i_l_e _._._. [----aarrggss _a_r_g_1 _._._.]
DDEESSCCRRIIPPTTIIOONN
The ooppeenn command opens a file (or a directory or URL), just as if you had
double-clicked the file's icon. If no application name is specified, the
default application as determined via LaunchServices …