Tag Archives: linux

How to make an shell alert service – and sent a mail?

logo2How to send a notification from Your server to mailbox?
How to create alerting service what will send a mail to us?
Sometime we need to be noticed about miscelaneous situations in our linux/unix systems.
Let’s make a small notice program – i need to been warned when amount of files in specified directory exceed defined value.

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How to find files with specified string… string in bytes (hex values)?

Zaznaczenie_005It’s easy to find files containing specified text string – using grep.
But if we must find files with part of a binary string?
Let’s try…





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My flash pendrive is damaged! How to recover data using ddrescue?

pendriveIn march 2013 my flash pendrive has gone crazy. This is an unwanted situation what can happen to everyone. I have backup, but old, from 2-3 months ago. Pendrive is dead in specified way. He shown their presence not in all time, for second-third mount.

I not remember all steps in this situation (6 months past) but i found some notes writed myself  of my recovery process, so i try to explain what i do to recover data from my usb stick.

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Remove file with strange name (non-printable character)

What is that file?New problem spotted today – when i edited one file, by a mistake i created a new one, with strange name. File was saved as ^H – page break code.


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