tabs(1) 맨 페이지 - 윈디하나의 솔라나라
|
svcadm(8)
을 검색하려면 섹션에서
8
을 선택하고, 맨 페이지 이름에
svcadm
을 입력하고 검색을 누른다.tabs(1) General Commands Manual tabs(1) NAME tabs - set tabs on a terminal SYNOPSIS tabs [options]] [tabstop-list] DESCRIPTION The tabs program clears and sets tab-stops on the terminal. This uses the terminfo clear_all_tabs and set_tab capabilities. If either is absent, tabs is unable to clear/set tab-stops. The terminal should be configured to use hard tabs, e.g., stty tab0 Like clear(1), tabs writes to the standard output. You can redirect the standard output to a file (which prevents tabs from actually chang‐ ing the tabstops), and later cat the file to the screen, setting tab‐ stops at that point. These are hardware tabs, which cannot be queried rapidly by applica‐ tions running in the terminal, if at all. Curses and other full-screen applications may use hardware tabs in optimizing their output to the terminal. If the hardware tabstops differ from the information in the terminal database, the result is unpredictable. Before running curses programs, you should either reset tab-stops to the standard interval tabs -8 or use the reset program, since the normal initialization sequences do not ensure that tab-stops are reset. OPTIONS General Options -Tname Tell tabs which terminal type to use. If this option is not given, tabs will use the $TERM environment variable. If that is not set, it will use the ansi+tabs entry. -d The debugging option shows a ruler line, followed by two data lines. The first data line shows the expected tab-stops marked with asterisks. The second data line shows the actual tab-stops, marked with asterisks. -n This option tells tabs to check the options and run any debugging option, but not to modify the terminal settings. -V reports the version of ncurses which was used in this program, and exits. The tabs program processes a single list of tab stops. The last option to be processed which defines a list is the one that determines the list to be processed. Implicit Lists Use a single number as an option, e.g., “-5” to set tabs at the given interval (in this case 1, 6, 11, 16, 21, etc.). Tabs are repeated up to the right margin of the screen. Use “-0” to clear all tabs. Use “-8” to set tabs to the standard interval. Explicit Lists An explicit list can be defined after the options (this does not use a “-”). The values in the list must be in increasing numeric order, and greater than zero. They are separated by a comma or a blank, for exam‐ ple, tabs 1,6,11,16,21 tabs 1 6 11 16 21 Use a “+” to treat a number as an increment relative to the previous value, e.g., tabs 1,+5,+5,+5,+5 which is equivalent to the 1,6,11,16,21 example. Predefined Tab-Stops POSIX defines several predefined lists of tab stops. -a Assembler, IBM S/370, first format 1,10,16,36,72 -a2 Assembler, IBM S/370, second format 1,10,16,40,72 -c COBOL, normal format 1,8,12,16,20,55 -c2 COBOL compact format 1,6,10,14,49 -c3 COBOL compact format extended 1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67 -f FORTRAN 1,7,11,15,19,23 -p PL/I 1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61 -s SNOBOL 1,10,55 -u UNIVAC 1100 Assembler 1,12,20,44 Margins A few terminals provide the capability for changing their left/right margins. The tabs program has an option to use this feature: +m margin The effect depends on whether the terminal has the margin capabil‐ ities: · If the terminal provides the capability for setting the left margin, tabs uses this, and adjusts the available width for tab-stops. · If the terminal does not provide the margin capabilities, tabs imitates the effect, putting the tab stops at the appropriate place on each line. The terminal's left-margin is not modi‐ fied. If the margin parameter is omitted, the default is 10. Use +m0 to reset the left margin, i.e., to the left edge of the terminal's display. Before setting a left-margin, tabs resets the margin to reduce problems which might arise on moving the cursor before the current left-margin. When setting or resetting the left-margin, tabs may reset the right- margin. PORTABILITY IEEE Std 1003.1/The Open Group Base Specifications Issue 7 (POSIX.1-2008) describes a tabs utility. However · This standard describes a +m option, to set a terminal's left-mar‐ gin. Very few of the entries in the terminal database provide the smgl (set_left_margin) or smglp (set_left_margin_parm) capability needed to support the feature. · There is no counterpart in X/Open Curses Issue 7 for this utility, unlike tput(1). The -d (debug) and -n (no-op) options are extensions not provided by other implementations. A tabs utility appeared in PWB/Unix 1.0 (1977). There was a reduced version of the tabs utility in Unix 7th edition and in 3BSD (1979). The latter supported a single “-n” option (to cause the first tab stop to be set on the left margin). That option is not documented by POSIX. The PWB/Unix tabs utility, which was included in System III (1980), used built-in tables rather than the terminal database, to support a half-dozen hardcopy terminal (printer) types. It also had built-in logic to support the left-margin, as well as a feature for copying the tab settings from a file. Later versions of Unix, e.g., SVr4, added support for the terminal database, but kept the tables to support the printers. In an earlier development effort, the tab-stop initialization provided by tset (1982) and incorporated into tput uses the terminal database, The +m option was documented in the Base Specifications Issue 5 (Unix98, 1997), and omitted in Issue 6 (Unix03, 2004) without document‐ ing the rationale, though an introductory comment “and optionally adjusts the margin” remains, overlooked in the removal. The documented tabs utility in Issues 6 and later has no mechanism for setting mar‐ gins. The +m option in this implementation differs from the feature in SVr4 by using terminal capabilities rather than built-in tables. POSIX documents no limits on the number of tab stops. Documentation for other implementations states that there is a limit on the number of tab stops (e.g., 20 in PWB/Unix's tabs utility). While some terminals may not accept an arbitrary number of tab stops, this implementation will attempt to set tab stops up to the right margin of the screen, if the given list happens to be that long. The Rationale section of the POSIX documentation goes into some detail about the ways the committee considered redesigning the tabs and tput utilities, without proposing an improved solution. It comments that no known historical version of tabs supports the capability of setting arbitrary tab stops. However, the Explicit Lists described in this manual page were imple‐ mented in PWB/Unix. Those provide the capability of setting abitrary tab stops. SEE ALSO infocmp(1M), tset(1), curses(3X), terminfo(5). This describes ncurses version 6.3 (patch 20211021). tabs(1)맨 페이지 내용의 저작권은 맨 페이지 작성자에게 있습니다.
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