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Get the best out of your bandwidth with tc

30.11.2025

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

25Mbit allot 1514 cell 8 weight 2500Kbit prio 3 \maxburst 20 avpkt $PKT bounded 16 # Now add filters to your child class 17 tc filter add dev $DEV protocol ip parent 1:0 prio 100 u32 match ip $DIR 12

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Data acquisition with shell tools

30.11.2025

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

"------------------------------------------------------" 18 echo -n "Replace stored data line (y)? ";read we 19 if [ "$we" = "y" ]; 20 then 21 22 # Delete line and write to 23 # temporary file 24 25 # Build sed instruction 26

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Managing Active Directory at the command line

30.11.2025

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

The introduction of PowerShell [3] sees Microsoft finally implement long overdue changes to Windows scripting. Unfortunately, PowerShell Version 1 was no big help for Active Directory (AD ... Professionally manage Active Directory users, groups, and other AD objects with Windows PowerShell Version 2.0.

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The next generation of Internet connectivity

30.11.2025

Home » Archive » 2011 » Issue 3: Are yo... »

:%02x%02x\n' 19 83 20 235 Note that 6to4 relays (the machines that handle your traffic) use the anycast address of 192.88.99.1 (2002:c058:6301::), so finding out who is actually handling your traffic ... 3

71%

Fast system management from Puppet Labs

30.11.2025

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

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Workshop: Container virtualization with LXC on Ubuntu 10.04

30.11.2025

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

:5 rwm 18 # consoles 19 lxc.cgroup.devices.allow = c 5:1 rwm 20 lxc.cgroup.devices.allow = c 5:0 rwm 21 lxc.cgroup.devices.allow = c 4:0 rwm 22 lxc.cgroup.devices.allow = c 4:1 rwm 23 # /dev/{,u}random 24

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Using the Expect scripting environment

30.11.2025

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

} 19 20 -re "($|%|>) " { interact } 21 22 timeout { 23 send_tty "No response from $host\n" 24 exit 25 } 26 } The script begins as usual by saving its arguments into variables

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Monitoring daemons with shell tools

30.11.2025

Home » Archive » 2010 » Issue 1: System... »

is not accessible! ****************" >> dba.log 15 /usr/local/etc/rc.d/002pgsql.sh start 16 sleep 15 17 psql -U monitor -d monitor -c "select * from watch;" 18 19 if [ $? -eq 0 ]; 20 21 then 22

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Strategies for routing voice calls around a firewall

30.11.2025

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

and then rewrites the Contact header to contain the publicly reachable NAT gateway socket. Listing 3 shows an Invite request that has been modified by the SIP proxy: 18.17.16.15 is the gateway's public address; 20.22

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Troubleshooting SELinux

30.11.2025

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

SELinux Information with -Z 01 # id -Z 02 user_u:system_r:unconfined_t 03 # ls -dZ /var/www/html 04 drwxr-xr-x root root system_u:object_r:httpd_sys_content_t /var/www/html 05 # ps -efZ | grep httpd 06

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