projects / unix-history / blame
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1 | .\" Copyright (c) 1980 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 5451a149 | 3 | .\" |
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4 | .\" Redistribution and use in source and binary forms are permitted |
| 5 | .\" provided that the above copyright notice and this paragraph are | |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 15 | .\" | |
| 16 | .\" @(#)expand.1 6.3 (Berkeley) %G% | |
| 5451a149 | 17 | .\" |
| 24fbc0bd | 18 | .TH EXPAND 1 "" |
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19 | .UC 4 |
| 20 | .SH NAME | |
| 21 | expand, unexpand \- expand tabs to spaces, and vice versa | |
| 22 | .SH SYNOPSIS | |
| 23 | .B expand | |
| 24 | [ | |
| 25 | \-tabstop | |
| 26 | ] [ | |
| 27 | \-tab1,tab2,...,tabn | |
| 28 | ] [ | |
| 29 | file ... | |
| 30 | ] | |
| 31 | .br | |
| 32 | .B unexpand | |
| 33 | [ | |
| 34 | .B \-a | |
| 35 | ] [ | |
| 36 | file ... | |
| 37 | ] | |
| 38 | .SH DESCRIPTION | |
| 39 | .I Expand | |
| 40 | processes the named files or the standard input writing | |
| 41 | the standard output with tabs changed into blanks. | |
| 42 | Backspace characters are preserved into the output and decrement | |
| 43 | the column count for tab calculations. | |
| 44 | .I Expand | |
| 45 | is useful for pre-processing character files | |
| 46 | (before sorting, looking at specific columns, etc.) that | |
| 47 | contain tabs. | |
| 48 | .PP | |
| 49 | If a single | |
| 50 | .I tabstop | |
| bfe02f44 | 51 | argument is given, then tabs are set |
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52 | .I tabstop |
| 53 | spaces apart instead of the default 8. | |
| 54 | If multiple tabstops are given then the tabs are set at those | |
| 55 | specific columns. | |
| 56 | .PP | |
| 57 | .I Unexpand | |
| 58 | puts tabs back into the data from the standard input or the named | |
| 59 | files and writes the result on the standard output. | |
| bfe02f44 | 60 | By default, only leading blanks and tabs |
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61 | are reconverted to maximal strings of tabs. If the |
| 62 | .B \-a | |
| 63 | option is given, then tabs are inserted whenever they would compress the | |
| 64 | resultant file by replacing two or more characters. |