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Top funny source code comments

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Some funny comments from different codes found around the net:

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/*
 * OK; before you read the following code know what I am trying to do.
 * I needed to get the list of child catagories from the root node so that
 * the root node didn't appear in the selection box. But for some stupid
 * fucking reason the stupid fucking DBA wont let me access the items using
 * indices and I instead have to use their stupid fucking Iterator
 * implementation. So there.
 */
$firstList = $this->getRootNode()->getChildren();
foreach ($firstList as $node)
{
    $nodes = $node->getChildren();
    break;                // wtf?
}
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// if i ever see this again i'm going to start bringing guns to work

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‘Argument list too long’

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root@web2:$ rm pe-warn-*.bz2
-bash: /bin/rm: Argument list too long

This peoblem happens when you are trying to delete too many files in a directory at the same time – it seems rm has special limits …

To solve the problem:
Use:

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find . -name 'pe-warn-*.bz2' | xargs rm

or

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find . -name "pe-warn-*.bz2" -delete

Data Recovery

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Each of you looses already some important files like photos or important documents.
After a normal Windows crash it’ s not a problem to get all your data back.
I show you some methods to get your data back.

These two examples are taken directly from the ddrescue info pages.

Example 1: Rescue an ext3 partition in /dev/hda2 to /dev/hdb2

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dd_rescue /dev/hda2 /dev/hdb2 -l logfile.txt
e2fsck -v -f /dev/hdb2
mount -t ext3 -o ro /dev/hdb2 /mnt

If you have a damaged hard disk /dev/sda1 and you have an empty space hard disk /dev/sdb1 You can copy data from /dev/sda1 to /dev/sdb1 use the following commnd

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dd_rescue /dev/sda1 /dev/sda2/backup.img
# To mount use:
mount -t ext3 /dev/sda2/backup.img mnt/ -o loop

Example 2: Rescue a CD-ROM in /dev/cdrom

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ddrescue -b 2048 /dev/cdrom cdimage logfile

CCNA Exploration 4 – Module 4

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Configure R1 with OSPF simple authentication:

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R1(config)#router ospf 1
R1(config-router)#area 0 authentication
 
R1(config-router)#interface S0/0/0
R1(config-if)#ip ospf authentication-key cisco123
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R2(config)#interface S0/0/1
R2(config-if)#ip ospf authentication message-digest
R2(config-if)#ip ospf message-digest-key 1 md5 cisco12

Configure Router to support Cisco SDM:

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R1# configure terminal
R1(config) # ip http server
R1(config) # ip http secure-server
R1(config) # ip http authentication local
R1(config) # username Student privilege 15 secret cisco
R1(config) # line vty 0 4
R1(config-line) # privilege level 15
R1(config-line) # login local
R1(config-line) # transport input telnet ssh
R1(config-line) # exit

Additional security for VTY:

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R1 (config) # line vty 0 4
R1 (config-line) # exec-timeout 3
R1 (config-line) # exit
R1 (config) # service tcp-keepalives in

Additional tricks:

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Router (config) # crypto key generate rsa
Router (config) # ip ssh time-out 15
Router (config) # ip ssh authentication-retries 2














Supports incoming telnet and SSH sessions:

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R1 (config) # line vty 0 4
R1 (config-line) # no transport input
R1 (config-line) # transport input telnet ssh
R1 (config-line) # exit

Supports only incoming SSH sessions:

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R1 (config) # line vty 0 4
R1 (config-line) # no transport input
R1 (config-line) # transport input ssh
R1 (config-line) # exit