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19%
The fine art of allocating memory
30.11.2025
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); i+= 4096) newblock[i] = 'Y'; 12 printf("Allocated %d MB\n", allocation); 13 } 14 } Things are more interesting when memory is being used. Uncommenting line 11 does just that. The OOM
19%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
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[i] + b[i]; } When the number of cycles is known at compile time, a loop can be fully unrolled: c[0] = a[0] + b[0]; c[1] = a[1] + b[1]; c[2] = a[2] + b[2]; c[3] = a[3] + b[3]; However, it remains
19%
Intruder Detection with tcpdump
28.11.2011
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is to put it in a filter: # tcpdump -n -s 1515 -c 5 -i eth1 tcp or udp or icmp This will catch only tcp , udp , or icmp . Tables 3 and 4 show you what you need to know to find all TCP packets with the SYN
19%
Monitoring events with the Audit daemon
17.02.2015
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Lead Image © alphaspirit , 123RF.com
e syscall=2 success=yes exit=3 a0=7fff67b1e9fc a1=0 a2=1fffffffffff0000 a3=3109e85ad0 items=1 ppid=7144 pid=11992 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000
19%
Finding Memory Bottlenecks with Stream
25.09.2013
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a(i) = b(i) + c(i) 24 1 TRIAD a(i) = b(i) + q*c(i) 24 2   The Copy benchmark measures the transfer rate in the absence of arithmetic. This should
19%
Manipulation detection with AFICK
05.12.2019
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Lead Image © Christos Georghiou, 123RF.com
# d : device # i : inode # p : permissions # n : number of links # u : user # g : group # s : size # b : number of blocks # m : mtime # c : ctime # a : atime ** #all : p+d+i+n+u+g+s+b+m+c+md5 #R : p+d+i+n+u+g+s+m+c
19%
Analyzing Kernel Crash Dumps
25.11.2012
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/cmdline root=/dev/disk/by-uuid/10a83ffe-5a9f-48a2-b8cb-551c2cc6b42d resume=/dev/sda3 \ splash=silent text showopts crashkernel=128 sles:~ # /etc/init.d/boot.kdump status kdump kernel loaded
19%
Automate CentOS and RHEL installation with PXE
02.02.2021
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Lead Image © Michael Kempf, Fotolia.com
timezone 19 timezone Europe/Vienna --isUtc --ntpservers 172.23.48.8,172.23.48.9 20 # user setup 21 user --name=example-user --password= --iscrypted --gecos="example-user" 22 # Disk partitioning
19%
Intruder detection with tcpdump
30.11.2025
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© Monika Wisniewska, 123RF.com
, tcpdump [1] is deployed with libpcap (a C/C++ library for network traffic capture) and maintained by the libpcap developers. With tcpdump, you can analyze large binary files that are too large to view
19%
Sharing Linux Terminals
13.07.2022
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. Figure 5: Terminal after creating a new tmux window. To cycle through windows, press Ctrl+B-n (next), Ctrl+B-p (previous), or Ctrl+B-x  (where x =0-9) to go to a specific window. If you type Ctrl

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