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13%
Managing virtual machines
30.11.2025
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© Igor Klimov, 123RF.com
end (Figure 2). Listing 3 update-dns 01 #!/usr/bin/perl 02 03 use DBI; 04 05 $db_user = "powerdns"; 06 $db_passwd = "powerpass"; 07 08 $hostname = $ARGV[0] . ".my.org"; 09 $ip = $ARGV[1
13%
Apache 2.4 with mod_lua
30.11.2025
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© Tom Grundy, 123RF.com
type="text" name="firstname"> 07
08 09 10 11 Listing 3 shows the content
13%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
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)/8; switch(count%8){ case 0: do{ *to = *from++; case 7: *to = *from++; case 6: *to = *from++; case 5: *to = *from++; case 4: *to = *from++; case 3: *to = *from++; case 2: *to
13%
Sys Admin On the Go
30.11.2025
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Laurent Davoust, 123RF.com
\@mydomain.com"; 06 07 while(<>) { 08 if ( /^From:/ ) { 09 `sudo /etc/init.d/gdm restart` if ( /$legit_sender/ ); 10 exit 0; 11 } 12 } Two final authorization changes are needed to make
13%
News for Admins
07.10.2025
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AMD64 and ARM64 HTTP Boot support in Debian Installer and Live images for UEFI/U-Boot systems Upgraded software stack: Gnome 48, KDE Plasma 6, Linux kernel 6.12 LTS, GCC 14.2, Python 3
13%
An IT nomad's daily diary
30.11.2025
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© Kateryna Pruchkovska, 123RF.com
("http://spacewalk.tuxgeek.de/cobbler_api") 06 token = conn.login(user, password) 07 08 cblr_systems = '/root/cobbler.csv' 09 10 if os.access(cblr_systems, os.F_OK): 11 print "Reading system configuration file %s" % cblr_systems 12 ... 6
13%
Exploring Nmap's scripting engine
30.11.2025
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.have_ssl() then 11 return false 12 end 13 return true 14 end The portrule in Listing 2 creates the variables svc.std and svc.ssl as associative arrays (lines 2 and 3) and then checks to see ... 6
13%
Securing email communication with GnuPG
07.10.2025
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Photo by Amol Tyagi on Unsplash_Key.jpg
output similar to ed25519 2022-08-29 [SC] [expires: 2027-08-20] uid [ultimate] Name name@example.org updgef8corpy81hia1rhd8npqiti6nzf @example.org In the output you will see a 32-character string
13%
Server virtualization with VirtualBox
30.11.2025
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© Federico Caputo, 123RF.com
, Mac OS X, and Solaris), and it supports a wide number of guest systems, including exotics such as DOS/WIN 3.1 and OS/2. Installing VirtualBox is easy on any platform because it usually only involves
13%
Business continuity for small to medium-sized enterprises
30.11.2025
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© Andrea, Fotolia.com
combinations are supported: ShadowProtect 4.0.1: Oracle VirtualBox 3.1.0--3.2.6 ShadowProtect 4.0.5: Oracle VirtualBox 3.1.0--3.2.12 ShadowProtect 4.1: Oracle VirtualBox 3.1.0--4.0.4 Shadow

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