Blame

Date:
Message:
checkpoint
Actions:
History | Blob | Raw File
  1 78e51a8c 2005-01-14 devnull <head>

  2 78e51a8c 2005-01-14 devnull <title>tail(1) - Plan 9 from User Space</title>

  3 78e51a8c 2005-01-14 devnull <meta content="text/html; charset=utf-8" http-equiv=Content-Type>

  4 78e51a8c 2005-01-14 devnull </head>

  5 78e51a8c 2005-01-14 devnull <body bgcolor=#ffffff>

  6 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0 width=100%>

  7 78e51a8c 2005-01-14 devnull <tr height=10><td>

  8 78e51a8c 2005-01-14 devnull <tr><td width=20><td>

  9 78e51a8c 2005-01-14 devnull <tr><td width=20><td><b>TAIL(1)</b><td align=right><b>TAIL(1)</b>

 10 78e51a8c 2005-01-14 devnull <tr><td width=20><td colspan=2>

 11 78e51a8c 2005-01-14 devnull     <br>

 12 78e51a8c 2005-01-14 devnull <p><font size=+1><b>NAME     </b></font><br>

 13 78e51a8c 2005-01-14 devnull 

 14 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 15 78e51a8c 2005-01-14 devnull 

 16 78e51a8c 2005-01-14 devnull     tail &ndash; deliver the last part of a file<br>

 17 78e51a8c 2005-01-14 devnull     

 18 78e51a8c 2005-01-14 devnull </table>

 19 78e51a8c 2005-01-14 devnull <p><font size=+1><b>SYNOPSIS     </b></font><br>

 20 78e51a8c 2005-01-14 devnull 

 21 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 22 78e51a8c 2005-01-14 devnull 

 23 78e51a8c 2005-01-14 devnull     <tt><font size=+1>tail</font></tt> [ <tt><font size=+1>+&#8722;</font></tt><i>number</i>[<tt><font size=+1>lbc</font></tt>][<tt><font size=+1>rf</font></tt>] ] [ <i>file</i> ] 

 24 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>

 25 78e51a8c 2005-01-14 devnull     

 26 78e51a8c 2005-01-14 devnull     <tt><font size=+1>tail</font></tt> [ <tt><font size=+1>&#8722;fr</font></tt> ] [ <tt><font size=+1>&#8722;n</font></tt> <i>nlines</i> ] [ <tt><font size=+1>&#8722;c</font></tt> <i>nbytes</i> ] [ <i>file</i> ]<br>

 27 78e51a8c 2005-01-14 devnull     

 28 78e51a8c 2005-01-14 devnull </table>

 29 78e51a8c 2005-01-14 devnull <p><font size=+1><b>DESCRIPTION     </b></font><br>

 30 78e51a8c 2005-01-14 devnull 

 31 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 32 78e51a8c 2005-01-14 devnull 

 33 78e51a8c 2005-01-14 devnull     <i>Tail</i> copies the named file to the standard output beginning at

 34 78e51a8c 2005-01-14 devnull     a designated place. If no file is named, the standard input is

 35 78e51a8c 2005-01-14 devnull     copied. 

 36 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>

 37 78e51a8c 2005-01-14 devnull     

 38 78e51a8c 2005-01-14 devnull     Copying begins at position <tt><font size=+1>+</font></tt><i>number</i> measured from the beginning,

 39 78e51a8c 2005-01-14 devnull     or <tt><font size=+1>&#8722;</font></tt><i>number</i> from the end of the input. <i>Number</i> is counted in lines,

 40 78e51a8c 2005-01-14 devnull     1K blocks or bytes, according to the appended flag <tt><font size=+1>l</font></tt>, <tt><font size=+1>b</font></tt>, or <tt><font size=+1>c</font></tt>.

 41 78e51a8c 2005-01-14 devnull     Default is <tt><font size=+1>&#8722;10l</font></tt> (ten ell). 

 42 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>

 43 78e51a8c 2005-01-14 devnull     

 44 78e51a8c 2005-01-14 devnull     The further flag <tt><font size=+1>r</font></tt> causes tail to print lines from the end of

 45 78e51a8c 2005-01-14 devnull     the file in reverse order; <tt><font size=+1>f</font></tt> (follow) causes <i>tail</i>, after printing

 46 78e51a8c 2005-01-14 devnull     to the end, to keep watch and print further data as it appears.

 47 78e51a8c 2005-01-14 devnull     

 48 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>

 49 78e51a8c 2005-01-14 devnull     

 50 78e51a8c 2005-01-14 devnull     The second syntax is that promulgated by POSIX, where the <i>numbers</i>

 51 78e51a8c 2005-01-14 devnull     rather than the options are signed.<br>

 52 78e51a8c 2005-01-14 devnull     

 53 78e51a8c 2005-01-14 devnull </table>

 54 78e51a8c 2005-01-14 devnull <p><font size=+1><b>EXAMPLES     </b></font><br>

 55 78e51a8c 2005-01-14 devnull 

 56 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 57 78e51a8c 2005-01-14 devnull 

 58 78e51a8c 2005-01-14 devnull     <tt><font size=+1>tail file<br>

 59 78e51a8c 2005-01-14 devnull     </font></tt>

 60 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 61 78e51a8c 2005-01-14 devnull 

 62 78e51a8c 2005-01-14 devnull         Print the last 10 lines of a file.<br>

 63 78e51a8c 2005-01-14 devnull         

 64 78e51a8c 2005-01-14 devnull     </table>

 65 78e51a8c 2005-01-14 devnull     <tt><font size=+1>tail +0f file<br>

 66 78e51a8c 2005-01-14 devnull     </font></tt>

 67 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 68 78e51a8c 2005-01-14 devnull 

 69 78e51a8c 2005-01-14 devnull         Print a file, and continue to watch data accumulate as it grows.<br>

 70 78e51a8c 2005-01-14 devnull         

 71 78e51a8c 2005-01-14 devnull     </table>

 72 78e51a8c 2005-01-14 devnull     <tt><font size=+1>sed 10q file<br>

 73 78e51a8c 2005-01-14 devnull     </font></tt>

 74 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 75 78e51a8c 2005-01-14 devnull 

 76 78e51a8c 2005-01-14 devnull         Print the first 10 lines of a file.<br>

 77 78e51a8c 2005-01-14 devnull         

 78 78e51a8c 2005-01-14 devnull     </table>

 79 78e51a8c 2005-01-14 devnull     

 80 78e51a8c 2005-01-14 devnull </table>

 81 78e51a8c 2005-01-14 devnull <p><font size=+1><b>SOURCE     </b></font><br>

 82 78e51a8c 2005-01-14 devnull 

 83 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 84 78e51a8c 2005-01-14 devnull 

 85 78e51a8c 2005-01-14 devnull     <tt><font size=+1>/usr/local/plan9/src/cmd/tail.c<br>

 86 78e51a8c 2005-01-14 devnull     </font></tt>

 87 78e51a8c 2005-01-14 devnull </table>

 88 78e51a8c 2005-01-14 devnull <p><font size=+1><b>BUGS     </b></font><br>

 89 78e51a8c 2005-01-14 devnull 

 90 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>

 91 78e51a8c 2005-01-14 devnull 

 92 78e51a8c 2005-01-14 devnull     Tails relative to the end of the file are treasured up in a buffer,

 93 78e51a8c 2005-01-14 devnull     and thus are limited in length. 

 94 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>

 95 78e51a8c 2005-01-14 devnull     

 96 78e51a8c 2005-01-14 devnull     According to custom, option <tt><font size=+1>+</font></tt><i>number</i> counts lines from 1, and counts

 97 78e51a8c 2005-01-14 devnull     blocks and bytes from 0. 

 98 78e51a8c 2005-01-14 devnull     <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>

 99 78e51a8c 2005-01-14 devnull     

100 78e51a8c 2005-01-14 devnull     <i>Tail</i> is ignorant of UTF.<br>

101 78e51a8c 2005-01-14 devnull     

102 78e51a8c 2005-01-14 devnull </table>

103 78e51a8c 2005-01-14 devnull 

104 78e51a8c 2005-01-14 devnull <td width=20>

105 78e51a8c 2005-01-14 devnull <tr height=20><td>

106 78e51a8c 2005-01-14 devnull </table>

107 78e51a8c 2005-01-14 devnull <!-- TRAILER -->

108 78e51a8c 2005-01-14 devnull <table border=0 cellpadding=0 cellspacing=0 width=100%>

109 78e51a8c 2005-01-14 devnull <tr height=15><td width=10><td><td width=10>

110 78e51a8c 2005-01-14 devnull <tr><td><td>

111 78e51a8c 2005-01-14 devnull <center>

112 78e51a8c 2005-01-14 devnull <a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a>

113 78e51a8c 2005-01-14 devnull </center>

114 78e51a8c 2005-01-14 devnull </table>

115 78e51a8c 2005-01-14 devnull <!-- TRAILER -->

116 78e51a8c 2005-01-14 devnull </body></html>