NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/fj/lang/awk/47

Text File | 1992-12-24 | 2.3 KB | 58 lines

Newsgroups: fj.lang.awk
Path: sparky!uunet!ccut!news.u-tokyo.ac.jp!wnoc-tyo-news!sranha!tsran3!i-wada
From: [e-mail] (Isamu Wada)
Subject: Re: Pattern1,Pattern2
In-Reply-To: [e-mail]'s message of 22 Dec 1992 14:24:35 JST
Nntp-Posting-Host: tsran3
References: <[e-mail]> <[e-mail]>
    <[e-mail]>
Sender: [e-mail] (USENET News)
Organization: Software Research Associates, Inc., Japan
Date: Thu, 24 Dec 1992 10:31:33 GMT
Message-ID: <[e-mail]>
Lines: 43

$B$o$@!w(BSRA$B$G$9!#(B

In article <[e-mail]>
    [e-mail] (TANI Tadaaki,,,) writes:

   <[e-mail]>$B$N5-;v$K$*$$$F(B
   [e-mail]$B$5$s$O=q$-$^(B$B$7$?!#(B

   >     `NULL'
   >          The empty pattern matches every input record.  (*Ref The Empty
   >          Pattern: Empty.)

$B$3$N0zMQ$O!"$A$g$C$HITE,@Z$J$b$N$@$HH?>J$7$F$$$^$9(B$B!#$I$A$i$+$H$$$&$H(B
gawk.1 $B$N<!$N$H$3$m$N$[$&$,NI$+$C$?$+$bCN$l$^$;$s!#(B

    Uninitialized variables have the numeric value 0 and the
    string value "" (the null, or empty, string).


   $B!!$3$l$,K\Ev$J$i(B 'NULL,/^$/ {print}' $B$G!"%a!<%k$N%X%C%@$@$1$,=PNO$5(B$B$l$k(B
   $B$O$:$G$9$h$M!#$$$^$d$C$F$_$^$7$?$,2?$bI=<($5$l$^$;$s$G$7$?!#(BNULL $B$,L$Dj(B
   $B5A$K$J$C$F$$$k$h$&$G$9!#(B

   $B!!;d$N;H$C$?(B gawk $B$O(B Gnu Awk (gawk) 2.11, patchlevel 1 $B$G$9!#%P!<%8%g%s(B
   $B$,8E$$$N$+$J$"!#(B

   $B!!$=$l$H!"(B'every input record' $B$K%^%C%A$9$k$N$J$i!"%Q%?!<%s#2$K;H$C$?;~!"(B
   $BF~NO$N:G8e$^$G$$(B$B$/$3$H$O$J$$$h$&$K;W$&$N$G$9$,!"!"!"(B

awk $B$O!"%Q%?!<%s$,%^%C%A$7$F%"%/(B$B%7%g%s$,<h$i$l$k$+$i(B 'NULL,/^$/' $B$G2?(B
$B$bI=<($5$l$J$$$N$O@5$7$$$H;W$$$^$9(B$B!#(B

$B>\$7$/%=!<%9$r8+$?$o$1$G$O$J$$$N$G$9$,!D%Q%?!<%s%^%C%A%s%0$N7k2L(B$B$O??56(B
$BCM$H$7$F=hM}$5$l$F$$$k$h$&$G$9!#$D$^$j(B /$B%Q%?!<%s(B1/$B$,(B $B??(B $B$K$J$C$?(B$B$H$3$m(B
$B$+$i(B /$B%Q%?!<%s(B2/ $B$,(B $B56(B $B$N4V%"%/%7%g%s$,<B9T$5$l$k$h$&$G$9!#$7$?(B$B$,$C$F(B
'/$B%Q%?!<%s(B1/,NULL' $B$H=q$-$^$7$?$,<B$O$3$l$O!"(B '/$B%Q%?!<%s(B1/,0' $B$H=q$$(B$B$F(B
$B$bNI$$$h$&$G$9!#(B


$B!t%a!<%k$N%X%C%@9T$r<h$j=P$9$s$@$C$?$i(B sed -n '1,/^$/p' $B$H$$$D$b=q$$$F(B
$B!t$$$^$9!#(B
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