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Concatenating pdfs

Use Ghostscript to contatenate pdf files: gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=finished.pdf file1.pdf file2.pdf

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Postfix problems

For some reason my postfix installation went totally wrong. I don’t know why other that I suspect that my IT manager may have given the wrong command and in his enthusiasm messed things up. I didn’t see much of an option but to reinstall postfix but that turned to be a lot harder than expected as 


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Uploading a file in Mediawiki

Uploading a file is easy if you see the upload link. I didn’t. To ensure you see it you have to change the setting in LocalSettings.php $wgEnableUploads = true; You may get an error **Could not create directory “mwstore://local-backend/local-public/ **and some more alpha characters. This turned out 


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Is it a 32 or 64 bit machine?

To find out whether the pc you are working on is actually a 32 or 64 bit machine you have to give the following terminal command: uname -m If it displays i386 or i686 then it is 32 bit. x86_64 is a 64 bit machine.

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Changing date format in Thunderbird

Create a small bash file vi ~/thunder and cut and paste the following in it. #!/bin/sh export LC_TIME=en_GB exec /usr/bin/thunderbird "$@ Then make the file executable and edit the launcher chmod 774 ~/thunder gnome-desktop-item-edit /usr/share/applications/mozilla-thunderbird.desktop and 


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