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49%
TCP Stealth hides open ports
10.04.2015
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Lead Image © momo5287, 123RF.com
3 04 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 05 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 06 | Source Port
49%
Tracing applications with OProfile and SystemTap
30.11.2025
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© boing, Photocase.com
). Listing 3 opreport for Mutt opreport -l /usr/bin/mutt CPU: Core 2, speed 2401 MHz (estimated) Counted L2_RQSTS events (number of L2 cache requests) with a unit mask of 0x7f (multiple flags
48%
Script utilities in depth: grep, awk, and sed
30.11.2025
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© jirkaejc, 123RF.com
( ) Used for grouping and back references \n Back reference: Expands to whatever matched the n th ( ) pattern Suffixes How Many to Match ? 0 or 1 * 0
48%
Configuring the JBoss application server
30.11.2025
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HONGQI ZHANG, 123RF.com
_HOME 03 /usr/lib/jvm/jre-1.6.0-openjdk 04 # java -version 05 java version "1.6.0_18" 06 OpenJDK Runtime Environment (IcedTea6 1.8.3) (fedora-46.1.8.3.fc13-i386) 07 OpenJDK Server VM (build 14.0-b16, mixed
48%
How to configure and use jailed processes in FreeBSD
14.03.2013
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© Corina Rosu, 123RF.com
, thus creating a routing-enabled jail. The address is passed in on launching the jail. The loopback address (127.0.0.1) and its IPv6 counterpart (::1) can be linked with a jail. This is referred
48%
Password management with FreeIPA
13.02.2017
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Lead Image © Marqs, photocase.com
UhJdmRCS3ZDbVRGVm1SeTdwVFlqbGxLVVNNYWpxSVNUdEFMRUxDclVySHZCSmJ6YzVqZmdUSVJYbVF nClhyV21UZXMzRHJqbFJjN2Q5MnpnZXJtUEtnbVRiMWxUL1pyVDhlQzB5Q0paSnNaSmJDOTVkVXRmK zNXZEFOY28KYXdJREFRQUIKLS0tLS1FTk
48%
Comparing Ceph and GlusterFS
21.04.2015
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Lead Image © agencyby, 123RF.com
mounts and store data directly on GlusterFS. For this, the emulator and virtualizer must at least be version 1.3: # ldd /usr/bin/qemu-system-x86_64\ |grep libgfapi libgfapi.so.0 => \ /lib64/libgfapi
48%
Modern Fortran for today and tomorrow
17.06.2017
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Lead Image © homestudio, 123RF.com
integer :: allocate_status 08 ! 09 n = 10 10 allocate( array(n, n), stat = allocate_status ) 11 if (allocate_status /= 0) stop "Could not allocate array" 12 ! 13 subarray => array(3:7,3:7) 14
48%
HDF5 and Parallel I/O
17.05.2017
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, 5 ) / ( 8, 5 ) }       DATA {       (0,0): 0, 1, 2, 3, 4,       (1,0): 5, 6, 7, 8, 9,       (2,0): 10, 11, 12, 13, 14,       (3,0): 15, 16, 17, 18, 19,       (4,0): 20, 21, 22, 23, 24,       (5,0): 25, 26, 27, 28, 29,       (6,0
48%
Detect failures and ensure high availability
22.05.2023
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Photo by Tim Foster on Unsplash
a secondary (local) drive with the exact same capacity on each, /dev/sdb: $ cat /proc/partitions|grep sd 8 0 10485760 sda 8 1 1024 sda1 8 2 1835008 sda2 8 3

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