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Debugging the Linux kernel with the Qemu emulator

30.11.2025

Home » Archive » 2012 » Issue 07: Xen v... »

:add-symbol-file module.ko text_address -s .data data_address -s .bss bss_address 9. Debug: Set breakpoints and so on. In Toolchain , enable the Build gdb for the Host option; in Kernel | Kernel version , type 3

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Shell scripts: Equal rights for Unix derivatives and Linux

30.11.2025

Home » Archive » 2010 » Issue 2: Backup... »

environments. The example in Listing 3 shows how you could handle scripting if this is relevant to your environment. Listing 3 Handling Special Cases 01 OS=`uname -s` 02 RSH="rsh -l user" 03 RSH2

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Monitoring your cluster with a home-grown OCF agent

30.11.2025

Home » Archive » 2012 » Issue 07: Xen v... »

_NOT_RUNNING 08 fi 09 10 pid=`cat $ASTRUNDIR/asterisk.pid` 11 ocf_run kill -s 0 $pid 12 rc=$? 13 14 if [ $rc -eq 0 ]; then 15 if ocf_is_true "$OCF_RESKEY_realtime"; then 16

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Archiving email and documents for small businesses

30.11.2025

Home » Archive » 2012 » Issue 08: FreeNAS »

.tex att3.tex > attach.tex 28 pdflatex attach.tex 29 30 # Generate filename from date and random number 31 32 dn=$(date +%Y-%m-%d-%H-%M-%S.$$) 33 34 # Merge PDF files 35 36 pdftk A=copy.pdf B=attach.pdf CAT

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Cgroups for resource management in Linux

30.11.2025

Home » Archive » 2011 » Issue 6: Perfor... »

cgroup, which has no restrictions. You can test this by sending a SIGUSR1 to the process: # kill -USR1 $pid 578804+0 records in 578804+0 records out 296347648 bytes (296 MB) copied, 7.00803 s, 42.3 MB/s

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Using the Expect scripting environment

30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

tcsh\r" 06 expect "#" 07 send "cp .ssh/authorized_keys ~root/.ssh\r" 08 expect "#" 09 send "cd /etc/ssh; cp sshd_config{,.0}\r" 10 expect "#" 11 send "cat sshd_config.0 | sed -e 's

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High availability clustering on a budget with KVM

30.11.2025

Home » Archive » 2010 » Issue 0: Active... »

. Current enterprise solutions for the virtualization of servers and desktops [3] are all based on KVM. Setup and Software The example discussed in this article uses two physical nodes: host1 and host2

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The fail2ban intrusion prevention framework

30.11.2025

Home » Archive » 2012 » Issue 10: Traff... »

Users$ 07 ^%(__prefix_line)sauthentication failure; logname=\S* uid=\S* euid=\S* tty=\S* ruser=\S* rhost=(?:\s+user=.*)?\s*$ 08 ^%(__prefix_line)srefused connect from \S+ \s

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Apache 2.4 with mod_lua

30.11.2025