Minimal Perl For UNIX and Linux People 3 pot

... characters) that stands for something other than itself. 3 The word characters are defined later, in table 3. 5. 68 CHAPTER 3 PERL AS A (BETTER) grep COMMAND The following command looks for matches with ... delimiters Matches perl in $_. $data =~ /perl/ i Looks for a match with perl in $data, ignoring case differences Matches perl , PERL , Perl , and so on in $data. $data...

Ngày tải lên: 06/08/2014, 03:20

... <===== >>ebx; c10 633 34 <_end +d29ed0/a4efbfc> >>ecx; c326c9e8 <_end+2f 335 84/a4efbfc> >>edx; c1065de4 <_end+d2c980/a4efbfc> >>esi; c326c8b4 <_end+2f 334 50/a4efbfc> >>edi; ... installing Perl (and therefore find 2perl) , such people can use find commands like those shown previously. The procedure is as follows. The find 2per...

Ngày tải lên: 06/08/2014, 03:20

... #CDs_selected 30 $sum_ratings+=$rating; # needed for -r option 31 print; # print the selected line 32 } 33 } 34 END { 35 $num_cds=$.; # maximum line number = #lines read 36 if ( $r and $sel_cds ... "quote" metachars 30 31 $r and @ARGV=grep { chomp; -T } 32 `find @ARGV -follow -type f -print`; 33 $multifiles=@ARGV > 1; # controls "filenames:match" format...

Ngày tải lên: 06/08/2014, 03:20

... indentation 30 $indent=($cl_width - length $string )/2; 31 $padding=' ' x $indent; 32 $newstring="$padding$string"; 33 } 34 return $newstring; # return centered string, or undef 35 ... 12 .3. 6). Figure 12 .3 Manual page for Business::UPS module 9 The accuracy of this test depends on the suitability of your PERL5 LIB variable’s setting for your system (see se...

Ngày tải lên: 06/08/2014, 03:20

... xxxv Part 1 Minimal Perl: for UNIX and Linux Users 1 1 Introducing Minimal Perl 3 1.1 A visit to Perlistan 3 Sometimes you need a professional guide 5 1.2 Perl can be simple 7 1 .3 About Minimal Perl ... in Minimal Perl and removed only in the rare cases where it spoils the results. It’s shown here for both the sed and perl commands for uniformity. WRI...

Ngày tải lên: 25/03/2014, 10:27

... image 33 5 ✦ Printing key/value pairs from a hash using each 33 6 ✦ Understanding the implicit loop 33 7 10 .3 Looping with do while/until 33 8 Prompting for input 33 9 10.4 Looping with foreach 34 0 Unlinking ... 32 8 Directions for further study 32 9 10 Looping facilities 33 0 10.1 Looping facilities in the Shell and Perl 33 1 10.2 Looping with while/until 33 3 Totali...

Ngày tải lên: 06/08/2014, 03:20

... call Perl a liar when it actually speaks the truth, for reasons we’ll cover next. 53 CHAPTER 3 Perl as a (better) grep command 3. 1 A brief history of grep 53 3.2 Shortcomings of grep 54 3. 3 Working ... routinely in Minimal Perl and removed only in the rare cases where it spoils the results. It’s shown here for both the sed and perl commands for uniformity. WRITI...

Ngày tải lên: 06/08/2014, 03:20

... incomplete" and $count=$count + 1; Table 5.8 AWK and Perl programs for simple tasks AWK a Perl b Explanation 1 <= NR && NR <= 3 1 <= $. and $. <= 3 and print; Prints ... lines 4 .3 sed &apos ;3, 9s/RE/new/g' F perl -wpl -e &apos ;3 <= $. and $. <= 9 and s/RE/new/g;' F Attempt substitutions on lines 3 9 of F, and prin...

Ngày tải lên: 06/08/2014, 03:20

... similarities and differences in how data flows between com- mands and functions. 7 .3. 1 Comparing Unix pipelines and Perl functions Although there are distinct similarities between Unix command pipelines ... relatives in Unix Built-in Perl function Unix relative(s) Purpose Effects sort The Unix sort command List sorting Takes a list, and returns a sorted list. revers...

Ngày tải lên: 06/08/2014, 03:20

... Shell’s for loop is similar to Perl s foreach loop, not Perl s for loop. 10.5 LOOPING WITH for Although the Shell’s for is like Perl s foreach, Perl does have a for loop of its own, derived from ... field WORD FREQUENCY ukulele 0.047442 uke 0.0120 93 or 0.010 233 music 0.010 233 paypal 0.00 930 2 of 0.00 930 2 a 0.00 930 2 us 0.00 837 2 hawaiian 0.004409 You’...

Ngày tải lên: 06/08/2014, 03:20