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| <title>cat(1) - Plan 9 from User Space</title> |
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| <tr><td width=20><td><b>CAT(1)</b><td align=right><b>CAT(1)</b> |
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| <p><font size=+1><b>NAME </b></font><br> |
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| cat, read, nobs – catenate files<br> |
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| <p><font size=+1><b>SYNOPSIS </b></font><br> |
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| <tt><font size=+1>cat</font></tt> [ <i>file ...</i> ]<br> |
| <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> |
| <tt><font size=+1>nobs</font></tt> [ <i>file ...</i> ]<br> |
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| <p><font size=+1><b>DESCRIPTION </b></font><br> |
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| <i>Cat</i> reads each <i>file</i> in sequence and writes it on the standard |
| output. Thus<br> |
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| <tt><font size=+1>cat file |
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| prints a file and<br> |
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| <tt><font size=+1>cat file1 file2 >file3 |
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| </font></tt> |
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| concatenates the first two files and places the result on the |
| third. |
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| If no <i>file</i> is given, <i>cat</i> reads from the standard input. Output |
| is buffered in blocks matching the input. |
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| <i>Read</i> copies to standard output exactly one line from the named |
| <i>file</i>, default standard input. It is useful in interactive <a href="../man1/rc.html"><i>rc</i>(1)</a> |
| scripts. |
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| The <tt><font size=+1>−m</font></tt> flag causes it to continue reading and writing multiple |
| lines until end of file; <tt><font size=+1>−n</font></tt> causes it to read no more than <i>nline</i> |
| lines. |
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| <i>Read</i> always executes a single <tt><font size=+1>write</font></tt> for each line of input, which |
| can be helpful when preparing input to programs that expect line-at-a-time |
| data. It never reads any more data from the input than it prints |
| to the output. |
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| <i>Nobs</i> copies the named files to standard output except that it |
| removes all backspace characters and the characters that precede |
| 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> |
| 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> |
| <p><font size=+1><b>SOURCE </b></font><br> |
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| <tt><font size=+1>/usr/local/plan9/src/cmd/cat.c<br> |
| /usr/local/plan9/src/cmd/read.c<br> |
| /usr/local/plan9/bin/nobs<br> |
| </font></tt> |
| </table> |
| <p><font size=+1><b>SEE ALSO </b></font><br> |
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| <a href="../man1/cp.html"><i>cp</i>(1)</a><br> |
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| <p><font size=+1><b>DIAGNOSTICS </b></font><br> |
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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, |
| if it doesn’t read <i>nlines</i> lines.<br> |
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| </table> |
| <p><font size=+1><b>BUGS </b></font><br> |
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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 |
| reading them.<br> |
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| <!-- TRAILER --> |
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