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Annotation of 43BSDReno/share/doc/ucs/single/tac.1, revision 1.1.1.1

1.1       root        1: .\"    @(#)tac.1       1.1 6/9/85
                      2: .\"
                      3: .TH TAC 1 "June 9, 1985"
                      4: .SH NAME
                      5: tac \- concatenate and print files in reverse
                      6: .SH SYNOPSIS
                      7: .B tac
                      8: [
                      9: .B \-string
                     10: ] [
                     11: .B +string
                     12: ] file ...
                     13: .SH DESCRIPTION
                     14: .I Tac
                     15: reads each
                     16: .I file
                     17: in sequence
                     18: and writes it on the standard output, reversed by the file segments
                     19: delimited by
                     20: .I string.
                     21: .I \-string
                     22: specifies segments bounded on the left by
                     23: .I string,
                     24: while
                     25: .I +string
                     26: specifies right-bounded segments.
                     27: The default is
                     28: .I +\en
                     29: (print lines in reverse order).
                     30: .SH EXAMPLES
                     31: .RS
                     32: tac '-\e
                     33: .br
                     34: From\ ' /usr/spool/mail/$USER
                     35: .RE
                     36: prints out one's mail messages, most recent first.
                     37: .PP
                     38: .RS
                     39: tac file
                     40: .RE
                     41: prints the file in reverse, line by line, and:
                     42: .PP
                     43: .RS
                     44: tac file1 file2 >file3
                     45: .RE
                     46: reverses each of the first two files by line and places the
                     47: concatenated result on the third.
                     48: .SH SEE ALSO
                     49: cat(1), rev(1), tail(1), tmail(1)
                     50: .SH BUGS
                     51: .I Tac
                     52: doesn't yet handle multiple argument files exactly right.  It's
                     53: also unclear which direction it should process them in.
                     54: .br
                     55: .I Tac
                     56: does not (and cannot efficiently) work on piped input.

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