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32 .\" @(#)expand.1 8.1 (Berkeley) 6/9/93
33 .\" $FreeBSD: src/usr.bin/expand/expand.1,v 1.3.2.7 2003/02/25 00:54:13 trhodes Exp $
34 .\" $DragonFly: src/usr.bin/expand/expand.1,v 1.2 2003/06/17 04:29:26 dillon Exp $
42 .Nd expand tabs to spaces, and vice versa
48 .Ar tab1 , tab2 , ... , tabn
57 .Ar tab1 , tab2 , ... , tabn
64 utility processes the named files or the standard input writing
65 the standard output with tabs changed into blanks.
66 Backspace characters are preserved into the output and decrement
67 the column count for tab calculations.
70 utility is useful for pre-processing character files
71 (before sorting, looking at specific columns, etc.) that
76 utility puts tabs back into the data from the standard input or the named
77 files and writes the result on the standard output.
79 The following options are available:
80 .Bl -tag -width indent
84 By default, only leading blanks and tabs
85 are reconverted to maximal strings of tabs. If the
87 option is given, then tabs are inserted whenever they would compress the
88 resultant file by replacing two or more characters.
89 .It Fl t Sm Ar tab1 , tab2 , ... , tabn Sm
90 Set tab stops at column positions
91 .Ar tab1 , tab2 , ... , tabn .
92 If only a single number is given, tab stops are set that number of
93 column positions apart instead of the default number of 8.
100 environment variables affect the execution of
107 .Ex -std expand unexpand