All tricks round about samba fileserver goes here. Print Status: $> smbstatus -L Add User Steps to add a new samba user: add Linux-User(m creates a homedirs under /home/): $> useradd abrandt -d /home/abrandt -c “Annika Brandt” -G users -g users -m set Password: $> passwd abrandt set Samba-Password $> smbpasswd -a abrandt Samba reload […]
To sync filesystems over ssh (with port): $> rsync -azvu –exclude-from=’./exclude.txt’ -e ‘ssh -p 26 -o StrictHostKeyChecking=no’ user@host:/PATH/TOREMOTE/FILE/ORFOLDER/ /PATH/TO/LOKAL/FILEORFOLDER; Useful parameters -o StrictHostKeyChecking=no –  tells the the source host to accept the ssh-key from the destination host –exclude-from=’./exclude.txt’ – in exclude.txt each line specifies a path to ignore through synchronization –dry-run – only simulate what would have been […]
You can get a dump of all BIOS data of a unix machine (bspw. Debian)with: $> sudo dmidecode You can select special parts with: $> sudo dmidecode -s system-serial-number This will give you the Service-Tag of a DELL Server for example.
/** * Removes leading and tailing whitespace(spaces, tabs, …) * from given string */ function trim (inputstring) { // first remove leading then tailing whitespaces // before removing the trimmed string return inputstring.replace (/^\s+/, ”).replace (/\s+$/, ”); }
Installation: $> sudo apt-get install sendmail $> sudo apt-get install mailutils $> sudo apt-get install postfix Send messages using the mail-command To check If  postfix is installed and ready to work on your system, you can try: $> mail info@ask-sheldon.com Subject: TEST TESTETST EOT (Shortcut: ctrl + shift + d) Reconfiguration of postfix on Debian […]
The following snippets show how to implement ACL (Access-Control-List) for system configuration fields and main menu entries of your own modules.  It is also shown, how to check the ACL’s in the PHP code of your Module. Implement ACL – Access control for system configuration If you had configured a system configuration (System→Configuration) like this: <?xml […]
On Ubuntu / Debian $> sudo cat /proc/cpuinfo or $> sudo lscpu or $> sudo lshw | less
Get the kernel version $> uname -a Example output: Linux bravehartk2-ThinkPad-W520 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Or: $> uname -r Example output: 3.13.0-32-generic You can even use the following command to get the kernel version. It will also serve you information about the build date and a […]
If you need the possibility to let the users delete their own accounts, you can use the following snippet in a corresponding controller or observer to delete users in frontend: <?php $oCustomer = $this->_getSession()->getCustomer(); if(!$oCustomer->getId()){ Mage::throwException($this->__(‘Cannot load customer!’)); } //lie to mage 😉 // @todo: Check, if there is a better way Mage::register(‘isSecureArea’, true); $oCustomer->delete(); $this->_getSession()->clear(); […]
To add an image selector field to your system configuration: <image> <label>Image</label> <show_in_default>1</show_in_default> <show_in_website>1</show_in_website> <show_in_store>0</show_in_store> <sort_order>70</sort_order> <frontend_type>image</frontend_type> <backend_model>adminhtml/system_config_backend_image</backend_model> <upload_dir config=”system/filesystem/media” scope_info=”1″>customer/responsible_contacts</upload_dir> <base_url type=”media” scope_info=”1″>customer/responsible_contacts</base_url> <show_in_default> <enabled>1</enabled> </show_in_default> </image>
