Download PDF by David N. Blank-Edelman: Automating System Administration with Perl: Tools to Make

By David N. Blank-Edelman

In case you do structures management paintings of any variety, you should take care of the turning out to be complexity of your atmosphere and extending calls for in your time. Automating procedure management with Perl, moment variation, not just provide you with the suitable instruments to your activity, but in addition indicates how one can process particular difficulties and to soundly automate routine projects. up to date and extended to hide the most recent working platforms, applied sciences, and Perl modules, this variation of the "Otter Book" can help you: * deal with consumer bills

* display screen filesystems and methods

* paintings with configuration documents in very important codecs reminiscent of XML and YAML

* Administer databases, together with MySQL, MS-SQL, and Oracle with DBI

* paintings with listing companies like LDAP and energetic listing

* Script electronic mail protocols and unsolicited mail regulate

* successfully create, deal with, and learn log records Administer community identify and configuration providers, together with NIS, DNS and DHCP

* preserve, computer screen, and map community prone, utilizing applied sciences and instruments akin to SNMP, nmap, libpcap, GraphViz and RRDtool
* increase filesystem, technique, and community safeguard

This version contains extra appendixes to get you on top of things on applied sciences equivalent to XML/XPath, LDAP, SNMP, and SQL. With this publication in hand and Perl on your toolbox, you are able to do extra with less--fewer assets, much less attempt, and much much less hassle.

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I backed up the good files to another machine and got back to work; Perl saved the day. Walking the Filesystem Using the File::Find Module Now that we’ve explored the basics of filesystem walking, here’s a faster and spiffier way to do it. Perl comes with a module called File::Find that allows it to emulate the Unix find command. The easiest way to begin using this module is to use the find2perl command to generate prototypical Perl code for you. 26 | Chapter 2: Filesystems For instance, let’s say you need some code to search the /home directory for files named beesknees.

Determining whether a file is an authentic core dump file can be tricky when you have filesystems remotely mounted over a network by machines of different architectures, all with different core file formats. 2. Look at the modification date of the file. If someone is actively debugging a program, she may not be happy if you delete the core file out from under her. Before we look at any more code, it would probably be helpful to explain those mysterious variable aliasing lines: *name *dir *prune = *File::Find::name; = *File::Find::dir; = *File::Find::prune; Find::File makes a number of variables available to the wanted() subroutine as it runs.

Does it contain a smaller doll? If so, remove the contents and set aside the outer doll. 2. Repeat step 1 with the contents you just removed until you reach the center. 3. Paint the center doll. When it is dry, put it back in its container doll. 22 | Chapter 2: Filesystems 4. Repeat step 3 with the next-smallest doll until they’re all back in their containers and you’ve painted the last one. The process is the same every step of the way. If the thing in your hand has sub-things, put off dealing with it and deal with the sub-things first.

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Automating System Administration with Perl: Tools to Make You More Efficient by David N. Blank-Edelman


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