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16%
The top three SSH tricks
14.08.2017
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Lead Image © Fotoflash,Fotolia.com
-A INPUT -p tcp -s [IP address of allowed server] --dport 22 -j ACCEPT on the server to which you want to SSH. Trick 2: Copying Files Securely The SSH protocol also includes Secure Copy (SCP
16%
Chronicles
30.05.2021
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Lead Image © Maxim Kazmin, 123RF.com
can't be bothered to do what's right, although it's your responsibility to be sure they do. That sounds a lot like a classic catch-22 situation. Although, I never read the book or saw the movie, I
16%
Modularize websites with Web Components
09.04.2019
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Lead Image © Andrey Prokhorov, fotolia.com
. The AnotTitle class resolves the user-defined element in line 11 of Listing 4. The design pattern for is used again when creating the Web Components. In line 9, the template uses 3
16%
Gatling load-testing tool
03.02.2022
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Photo by NoWah Bartscher on Unsplash
to a singleton than a normal Java or C++ class. You don't have to be a Scala programmer to enjoy the freedom that Gatling provides. Most developers, despite having a favorite language or toolset, can easily learn
16%
Using Expect scripts to automate tasks
31.10.2025
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© Kheng Ho Toh, 123RF.com
Expect do this 15 # automatically - pausing briefly before sending each character. This 16 # pacifies every program I know of. The -c flag makes the script do 17 # this in the first place. The -C flag
16%
The fail2ban intrusion prevention framework
30.11.2025
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© Flavijus Piliponis, 123RF.com
that applies to all jails (a brief set of rules about a particular service) that don't have the ignoreip setting explicitly configured is: bantime = 1 maxretry = 3 Here, it's referring to how many
16%
Server virtualization with VirtualBox
30.11.2025
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© Federico Caputo, 123RF.com
apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-commona pache2-doc apache2-suexec libapache2-mod-php5 libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap libapr1 libaprutil1 libaprutil1
16%
Backup and replicate VMs on VMware ESXi
13.06.2016
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the option --backup-vms=VM1,VM2,VM3, which defines which VMs you want XSIBackup to replicate. Additionally, you can define whether the backup solution should overwrite existing files or only add changed data
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Live migration of virtual machines on Hyper-V
31.10.2025
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© Anna Omelchenko, 123RF.com
, such as an external hard drive, or directly across the network. You can also set up a schedule (Figure 3). Figure 3: Scheduling the replication
16%
Data acquisition with shell tools
30.11.2025
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Dmitriy Syechin, 123RF
|21|" | cut -d\| -f3` 48 b=`cat $newdat | grep "50|25|" | cut -d\| -f3` 49 50 a=$(echo $a | tr \, \.) 51 b=$(echo $b | tr \, \.) 52 53 54 psum=$(echo "$a+$b" | bc ) 55 echo -n "Invoice amount: $psum, continue

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