Category Archives: Command line

Security through obscurity – pdf removing passwords

Initially I was not planning on writing about how to crack pdf passwords.  After all, that would be irresponsible much in the way giving a knife to a small child is irresponsible – right? Well, simply typing in the following … Continue reading

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When all you have is a hammer …

I was speaking with a friend the other day and he was telling about this crazy thing that was being done in his department.  There was a task that needed to be done usually once a day and it was … Continue reading

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Punishment for laziness – root password recovery

I had a new idea for adding one more computer to my life.  The task was to actually provide some fun new functionality to my family and I attacked the task. At the beginning, I needed to log in as … Continue reading

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command line fun – spaces and arguments

I normally get to control most aspects of the program.  The most important yet trivial is the parameters that are being passed to the program.  Because I know what I want it is usually possible to coerce the calling script … Continue reading

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command line fun – getting to the base of things

Just a short time back I received a mail from a colleague with an error message.  The question from him was about the error and more importantly was this my program.  I did find some code that generated the same … Continue reading

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bash – its not a bug its a feature

It’s not a bug it’s a feature It has been said so many times it goes beyond cliche.  It is really easy to try and explain away odd behaviors as some sort of esoteric feature It took a while before I … Continue reading

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command line fun – listing and sorting

Linux is not Unix yet it is very similar.  They are so similar I never really notice the difference, even when writing scripts.  I needed to get a list of sorted files, so I tried the usual commands. ls -lS … Continue reading

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Oracle and batch reporting

My first real exposure to a real database was Sybase.  It actually is a fairly nice “little” database that you can come to grips with.  I mean little when compared to behemoth that is Oracle.  I don’t want to go … Continue reading

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command line fun – more fun with sftp

A few days back we needed to copy some files around in the production environment and the task was given to me.  It was one of those rather simple tasks as in the email was some examples from a colleague … Continue reading

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command line fun – testing for existence

I remember quite some time ago when I was developing a an application when the personal computer was actually fairly slow.  Of course I happened to pick a technology that worked just fine on a newer computer but it actually … Continue reading

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