Minimal Perl For UNIX and Linux People 4 ppt

... was so easily incorporated into the Perl script. For reference purposes, table 4. 6 provides a handy summary of the corresponding sed and perl commands that perform basic editing tasks, along with ... more, Perl s Shell-inspired eval function can be used for much more than substitutions, as you’ll see in section 8.7. Ta b l e 4 . 6 sed and Perl commands for common editing...

Ngày tải lên: 06/08/2014, 03:20

... integers 111 10 19 88 43 55 81 23 04 40 12 2 1 2 1 10 91 88 43 55 18 23 40 17 21 000 $ intra_line_sort integers 1 2 04 10 12 19 23 40 43 55 81 88 111 000 1 2 10 17 18 21 23 40 43 55 88 91 The effect ... integers 111 10 19 88 43 55 81 23 04 40 12 2 1 <- Original 1 2 04 10 12 19 23 40 43 55 81 88 111 <- Sorted 2 1 10 91 88 43 55 18 23 40 17 21 000 <- Original 000 1 2 10...

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 ... script 40 8 File::Find—the check_symlinks script 41 1 CGI—the survey.cgi script 41 4 ✦ Tips on using Object-Oriented modules 42 2 12 .4 Summary 42 4 Directions for...

Ngày tải lên: 25/03/2014, 10:27

... FAQ 89 CHAPTER 4 Perl as a (better) sed command 4. 1 A brief history of sed 89 4. 2 Shortcomings of sed 91 4. 3 Performing substitutions 93 4. 4 Printing lines by number 100 4. 5 Modifying templates 101 4. 6 ... case differences Matches perl , PERL , Perl , and so on in $data. $data =~ / perl /xi Same, except x requests extended syntax Matches perl , PERL , Perl , and so...

Ngày tải lên: 06/08/2014, 03:20

... [a-f0-9][a-f0-9]){20}' Oops: 0001 Code: 89 50 24 89 02 c7 43 24 00 00 00 00 89 1c 24 c7 44 24 04 ff Oops: 0002 Code: 89 50 04 89 02 c7 46 04 00 00 00 00 c7 06 00 00 00 00 d1 64 Satisfied with his result, Felix ... installing Perl (and therefore find 2perl) , such people can use find commands like those shown previously. The procedure is as follows. The find 2perl c...

Ngày tải lên: 06/08/2014, 03:20

... Reuters.txt" 40 41 $debug and warn "Command is:\n\t$command\n\n" and 42 $command="set -x; $command"; # enable Shell execution trace 43 44 system $command; # format to fit on screen 45 ... for match 40 if ( $@ ne "" ) { # show eval's error 41 warn "\n$0: Eval failed for pattern: '$matcher'\n\n"; 42 die " ;Perl sa...

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 ... 14) and then to reset $initializing to a False value, set the appropriate input record separator for the user-interaction phase, and prompt the user for input. Line 26 obtai...

Ngày tải lên: 06/08/2014, 03:20

... remove files ( rm_files, section 10 .4. 1) and to perform text substitutions for deciphering acronyms in email messages ( expand_acronyms, section 10 .4. 4). The relatively complex for loop should be used in ... conf commands specify your HOME directory’s myperl/lib (for library) subdirectory as the storage location for the modules you install, and HOME’s subdirec- tory myperl/ma...

Ngày tải lên: 06/08/2014, 03:20