126 lines
4.8 KiB
HTML
126 lines
4.8 KiB
HTML
<head>
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<title>cat(1) - Plan 9 from User Space</title>
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<meta content="text/html; charset=utf-8" http-equiv=Content-Type>
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</head>
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<body bgcolor=#ffffff>
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<table border=0 cellpadding=0 cellspacing=0 width=100%>
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<tr height=10><td>
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<tr><td width=20><td>
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<tr><td width=20><td><b>CAT(1)</b><td align=right><b>CAT(1)</b>
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<tr><td width=20><td colspan=2>
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<br>
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<p><font size=+1><b>NAME </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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cat, read, nobs – catenate files<br>
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</table>
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<p><font size=+1><b>SYNOPSIS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>cat</font></tt> [ <i>file ...</i> ]<br>
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<tt><font size=+1>read</font></tt> [ <tt><font size=+1>−m</font></tt> ] [ <tt><font size=+1>−n</font></tt> <i>nline</i> ] [ <i>file ...</i> ]<br>
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<tt><font size=+1>nobs</font></tt> [ <i>file ...</i> ]<br>
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</table>
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<p><font size=+1><b>DESCRIPTION </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<i>Cat</i> reads each <i>file</i> in sequence and writes it on the standard
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output. Thus<br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>cat file
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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</font></tt>
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</table>
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prints a file and<br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>cat file1 file2 >file3
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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</font></tt>
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</table>
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concatenates the first two files and places the result on the
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third.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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If no <i>file</i> is given, <i>cat</i> reads from the standard input. Output
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is buffered in blocks matching the input.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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<i>Read</i> copies to standard output exactly one line from the named
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<i>file</i>, default standard input. It is useful in interactive <a href="../man1/rc.html"><i>rc</i>(1)</a>
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scripts.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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The <tt><font size=+1>−m</font></tt> flag causes it to continue reading and writing multiple
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lines until end of file; <tt><font size=+1>−n</font></tt> causes it to read no more than <i>nline</i>
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lines.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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<i>Read</i> always executes a single <tt><font size=+1>write</font></tt> for each line of input, which
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can be helpful when preparing input to programs that expect line-at-a-time
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data. It never reads any more data from the input than it prints
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to the output.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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<i>Nobs</i> copies the named files to standard output except that it
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removes all backspace characters and the characters that precede
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them. It is useful to use as <tt><font size=+1>$PAGER</font></tt> with the Unix version of <a href="../man1/man.html"><i>man</i>(1)</a>
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when run inside a <i>win</i> (see <a href="../man1/acme.html"><i>acme</i>(1)</a>) window.<br>
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</table>
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<p><font size=+1><b>SOURCE </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>/usr/local/plan9/src/cmd/cat.c<br>
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/usr/local/plan9/src/cmd/read.c<br>
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/usr/local/plan9/bin/nobs<br>
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</font></tt>
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</table>
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<p><font size=+1><b>SEE ALSO </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<a href="../man1/cp.html"><i>cp</i>(1)</a><br>
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</table>
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<p><font size=+1><b>DIAGNOSTICS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<i>Read</i> exits with status <tt><font size=+1>eof</font></tt> on end of file or, in the <tt><font size=+1>−n</font></tt> case,
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if it doesn’t read <i>nlines</i> lines.<br>
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</table>
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<p><font size=+1><b>BUGS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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Beware of <tt><font size=+1>cat a b >a</font></tt> and <tt><font size=+1>cat a b >b</font></tt>, which destroy input files before
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reading them.<br>
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</table>
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<td width=20>
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<tr height=20><td>
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</table>
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<!-- TRAILER -->
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<table border=0 cellpadding=0 cellspacing=0 width=100%>
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<tr height=15><td width=10><td><td width=10>
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<tr><td><td>
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<center>
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<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a>
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</center>
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</table>
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<!-- TRAILER -->
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</body></html>
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