Minimal Perl For UNIX and Linux People 6 pptx
Tài liệu Unix and Linux Backups for System Administrators pptx
... write one now rather than wait for a crisis to convince you of its value. 1 Unix and Linux Backups SANS GIAC LevelOneâ 2000, 20011 Unix and Linux Backups for System Administrators By Robert BladerHello, ... much less stressful later. 21 Unix and Linux Backups SANS GIAC LevelOneâ 2000, 200121dd Examples - Forensicsã Files AND filesystem metadata are saved for forensics study ã Files that might ... order to get any useful information. 32 Unix and Linux Backups SANS GIAC LevelOneâ 2000, 200132Securityã Need to be able to do an image backup for forensics and to assess damageã Running...
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minimal perl for unix and linux people - manning 2006
... xxxvPart 1 Minimal Perl: for UNIX and Linux Users 11 Introducing Minimal Perl 31.1 A visit to Perlistan 3Sometimes you need a professional guide 51.2 Perl can be simple 71.3 About Minimal Perl ... A Unix- like, OS-portable find command 198Making the most of find 2perl 198 ✦ Helping non -Unix friends with find 2perl 1996.8 Summary 200Directions for further study 201Part 2 Minimal Perl: ... Minimal Perl and removed only in the rare cases where itspoils the results. It’s shown here for both the sed and perl commands for uniformity. WRITING SIMPLE SCRIPTS 33$ award_cruises2 -perlistan='kryten'...
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Minimal Perl For UNIX and Linux People 1 ppsx
... Minimal Perl 3 1. 1 A visit to Perlistan 3Sometimes you need a professional guide 5 1. 2 Perl can be simple 7 1. 3 About Minimal Perl 7What Minimal Perl isn’t 8 ✦ What Minimal Perl is 8 1. 4 Laziness ... Perlistan 3 1. 2 Perl can be simple 7 1. 3 About Minimal Perl 7 1. 4 Laziness is a virtue 9 1. 5 A minimal dose of syntax 10 1. 6 Writing one-line programs 11 1. 7 Summary 14 Perl is a great language, with ... collect and process input6Further details on creating Perl commands and scripts are provided in sections 2 .1 and 2.4. xii5 Perl as a (better) awk command 12 15 .1 A brief history of AWK 12 25.2...
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Minimal Perl For UNIX and Linux People 2 doc
... routinely in Minimal Perl and removed only in the rare cases where itspoils the results. It’s shown here for both the sed and perl commands for uniformity. WRITING SIMPLE SCRIPTS 37The second form ... "msg" formatvalidate_file2: Sorry, no switches allowed at validate_file2 line 6Table 2. 6 Shell and Perl techniques for writing messages to STDOUT and STDERRShell Perl Commentsecho ... glance. 42 CHAPTER 2 PERL ESSENTIALS 2. 5 ADDITIONAL SPECIAL VARIABLES Perl has a few other special variables that are used in part 1, which we’ll documenthere for reference purposes, and discuss...
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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 COMMANDThe following command looks for matches ... delimitersMatches perl in $_.$data =~ /perl/ i Looks for a match with perl in $data, ignoring case differencesMatches perl , PERL , Perl , and so on in $data.$data =~ / perl /xi Same, except x requests ... backslash.$data =~ m% perl # PeRl too! %xiSame, except adds a #-comment and uses % as a delimiterMatches perl , PERL , Perl , and so on in $data. Whitespace characters and #-comments within...
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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 correspondingsed 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, asyou’ll see in section 8.7.Ta b l e 4 . 6 sed and Perl commands for common editing activitiessed command Perl ... between AWK and Perl that were touchedon in the preceding discussion and in the comparisons of tables 5.1 and 5.2.Ways in which Perl is superior to AWK Perl alone (see tables 5.1 and 5.2) provides...
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Minimal Perl For UNIX and Linux People 5 pot
... # Check for proper invocation 9 $amount and $rate or warn "$Usage\n" and exit 255 ;10 11 $pct_rate=$rate/100; # 5 becomes . 05 12 $multiplier=1 + $pct_rate; # . 05 becomes 1. 05 13 # ... installing Perl (and therefore find 2perl) , such people can use findcommands like those shown previously.The procedure is as follows. The find 2perl command is run with optionsappropriate for the ... sed command, and some file operators vs. options of thefind command. A UNIX- LIKE, OS-PORTABLE find COMMAND 199cutting and pasting its output into delete commands in a cmd.exe window? Fortu-nately,...
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Minimal Perl For UNIX and Linux People 6 pptx
... 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 Effectssort The Unix sort command List sorting Takes a list, and returns a sorted list.reverse Linux s tac command List reversal ... rand; you’ll see it used to select random “fortunes” in section 9.1.4.As the counterpart to the Unix sort command, Perl has its own function calledsort. But Perl s version is unique in giving...
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Minimal Perl For UNIX and Linux People 7 potx
... ãman perlop # operators, and command interpolationãman perlsyn # basic syntax, including if/elseãman tput # command that retrieves terminal informationãman Term::ANSIColor # module for coloring ... treatment. For help in spotting these syntax errors and others, try running your code througha beautifier. You can learn about and download the standard Perl beautifier fromhttp://perltidy.sourceforge.net. 7 As ... eliminates the most common need for it 7 To learn about the first Perl beautifier, see http://TeachMePerl.com /perl_ beautifier.html.Table 8.5 String operators for concatenation and repetition Name Symbol...
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Minimal Perl For UNIX and Linux People 8 docx
... }NOTE The 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 ... FACILITIES IN THE SHELL AND PERL 331But adventurous Shell programmers will eventually encounter standard Unix commands that don’t work this way. For example, both tr and col1 are designed ... http://TeachMePerl.com/DQs_in_shell_vs _perl. html for details on the comparative use of doublequotes in the two languages. USING ARRAY VARIABLES 30727 printf $fortunes[ $index ]; # print random fortune 28 delete $fortunes[...
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Minimal Perl For UNIX and Linux People 9 potx
... missing from Perl . Table 10 .9 The Shell’s select loopselect var ; do commands; done # Form 0select var in LIST; do commands; done # Form 1Ta b l e 10 . 1 0 T h e select loop for Perl use Shell::POSIX::Select;select ... 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/man as the location for storing ... list.Some of the major forms of Perl s select loop are shown in table 10.10. Thesetake their inspiration from the Shell and then add enhancements for greater friendli-ness and, well, Perlishness.As...
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Minimal Perl For UNIX and Linux People 10 pdf
... xxv for loop 345–349good for index-oriented array processing 345 for loop (Perl) syntax of 345 for loop (Shell) 331compared to Perl s foreach 340foreach loop 340–344compared to Shell’s for ... 189See also command interpola-tioncommands (AWK) for printing rock-star birthdays 130 Perl equivalents for simple tasks 141simple ones compared to Perl equivalents 128commands (Perl) a one-line ... 196find commandas aid for finding misplaced files 179as argument pre-processor for Perl 197–198as emulated by find 2perl 198–200augmenting with Perl 183–184enhancing by adding Perl command 179-exec...
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assembly language step by step programming with dos and linux PHẦN 6 pptx
... modules, and EAT.ASM will assemble and run correctly without the Main PROC and Main ENDP statements. I would advise you to get in the habit of placing the main program portion of any assembly- language ... linker command line: TLINK EAT4 VIDLIB If you're using JED, display the Commands screen by pressing F4 and edit the linker command line. For example, to use TASM to link EAT4.OBJ and VIDLIB.OBJ, ... call Cleanup call ReturnToDOS This is clean and readable, and provides a necessary "view from a height" when you begin to approach a thousand-line assembly- language program. Remember...
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Essential MATLAB for Engineers and Scientists PHẦN 6 pptx
... 2.7790 866 665 71118e-0 06 1.21341 166 2 762 407e+000 9.583445148 564 351e-0131.21341 166 2 762 230e+000 -4.44089209850 062 6e-0 16 Zero found at1.21341 166 2 762 230e+000Note:➤ The variable y in the function files f.m and df.m is ... variable names may therefore be used intheir place when the function is called (referenced).234 Ch07-H8417 6/ 1/2007 16: 16 page 202 Essential MATLAB for Engineers and Scientists in polar coordinates ... ì3+15 ì7+19 ì11ÃÃÃ217 Ch07-H8417 6/ 1/2007 16: 16 page 204 Essential MATLAB for Engineers and Scientists Halley’s Comet, which visited us in 1985 /6, moves in an elliptical orbit about theSun...
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minimal perl for unix and linux people (2005)
... Minimal Perl Minimal Perl For UNIX and Linux People BY TIM MAHERMANNINGGreenwich(74° w. long.) For online information and ordering of this and other Manning books, ... for all the good times we’ve had together.viibrief contentsPart 1 Minimal Perl: for UNIX and Linux Users 11 Introducing Minimal Perl 32 Perl essentials 163 Perl as a (better) grep command ... (better) grep command 534 Perl as a (better) sed command 895 Perl as a (better) awk command 1216 Perl as a (better) find command 178Part 2 Minimal Perl: for UNIX and Linux Shell Programmers...
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