获得打印句柄
例:例9.4
(From a Script)
1 while(<DATA>){
2 print if /[A-Z][a-z]eve/;
}
_ _DATA_ _
Steve Blenheim 101
Betty Boop 201
Igor Chevsky 301
norma Cord 401
Jonathan DeLoach 501
Karen Evich 601
(Output)
Steve Blenheim 101
打开文件句柄
例:
(The Text File: datebook)
Steve Blenheim
Betty Boop
Lori Gortz
Sir Lancelot
norma Cord
Jon DeLoach
Karen Evich
--------------------------------------------------------------
(The Script)
#!/usr/bin/perl
# Open a file with a filehandle
1 open(FILE, "datebook") || die "Can't open datebook: $!\n";
2 while($line = <FILE>) {
3 print "$line" if $line =~ /^Lori/;
4 }
5 close(FILE);
(Output)
3 Lori Gortz