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27%
An IT nomad's daily diary
30.11.2025
Home
»
Archive
»
2011
»
Issue 6: Perfor...
»
","stage","app","gateway","eth
0
-ip","eth
0
-mask","eth1-mac","eth1-ip","eth1-mask" ] 19 system_dict = {} 20 21 f = open(cblr_systems, "r")
22
for line in f: 23 if line.startswith("#"): 24 continue 25 system
27%
Managing virtual machines
30.11.2025
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Archive
»
2012
»
Issue 09: Windo...
»
VALUES ('$hostname', '$ip', 'A', 86400, $time, 1,
0
)/; 21 } else {
22
$sql = qq/UPDATE records SET content = '$ip' WHERE name = '$hostname'/; 23 } 24 $sth->finish(); 25 $dbh->do($sql) or warn $dbh
27%
Creating an SFTP jail
30.11.2025
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»
2011
»
Issue 3: Are yo...
»
be replaced solely with the sshd configuration directives shown in Listing 3. Line 16 specifies that SFTP will listen on port 2202 instead of the default SSH port
22
. This option is configurable and left
27%
Shell scripts: Equal rights for Unix derivatives and Linux
30.11.2025
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Archive
»
2010
»
Issue 2: Backup...
»
OS*) 15 PING="ping" 16 PING2="" 17 ;; 18 esac 19 ... 20 21 for i in server1 server2 server3 workstation1 workstation2
22
do 23 $PING $i $PING2 > /dev/null 24 if [ "$?" != "
0
27%
Mandatory access control with Tomoyo Linux
30.11.2025
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Archive
»
2012
»
Issue 09: Windo...
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2.2
.x. 2.6.30 through 2.6.35 Debian 6 (Squeeze) 2.3.x. 2.6.36 through 3.
0
Ubuntu 11.10 2.4.x. 3.1. openSUSE 12.1 2.5.x. 3
27%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
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2012
»
Issue 07: Xen v...
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="binary" unique="
0
" required="
0
"> 18
19 Location of the Asterisk PBX server binary 20
21
Asterisk PBX server binary
22
27%
Tracing applications with OProfile and SystemTap
30.11.2025
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Archive
»
2010
»
Issue 1: System...
»
686 oprofile-
0
.9.5-4.fc12.i686 To profile the kernel, you need to tell OProfile where the kernel image is located with the --vmlinux option: opcontrol --setup --vmlinux=/usr/lib/debug/lib/ modules
27%
Connecting dissimilar IPsec implementations
30.11.2025
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»
2011
»
Issue 4: Secure...
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192.168.2.
0
/24; 21 service any;
22
} 23 IPsec-policy pfs2-aes256-sha1; 24 } 25 } 26 } 27 } Again you can reuse the proposal and the policy. Assuming
27%
A simple approach to the OCFS2 cluster filesystem
30.11.2025
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»
2010
»
Issue 1: System...
»
_dlm] root 3467 7
0
20:07 ? 00:00:00 [o2net] root 3965 7
0
20:24 ? 00:00:00 [ocfs2_wq] root 7921 7
0
22
:40 ? 00:00:00 [o2hb-BD5A574EC8] root 7935 7
27%
Tested: Autoconfiguring IPv6 clients
30.11.2025
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Archive
»
2011
»
Issue 5: Pen Te...
»
, the MAC address (e.g., 00:11:
22
:33:44:55) is split down the middle, and two bytes containing FF:FE are inserted. This gives you 64 bits. If the basis is a globally unique address (which should be the case
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