Category Archives: Open source software

Encrypting text at the command line with GnuPG

Storing GnuPG content of any kind (that is, plain text to be encrypted, encrypted text to be decrypted, even public keys from co-respondents) on disk can result in the same kind of vulnerabilities associated with storing any sensitive data on … Continue reading

Posted in Command Line, GNU Privacy Guard, How-To, Open source applications, Open source software, Practical Cryptography, Secure computing, Security/Cryptography | Comments Off on Encrypting text at the command line with GnuPG

Managing shell command history in OS X/Linux

One of the many benefits of using the command line shell in OS X or Linux (or any *nix or similar OS) is that the operating system keeps a history of all the commands you use, storing them in a … Continue reading

Posted in Command Line, computer science, Editors, How-To, Linux Tech Talk, Open source software, Programmer's Tools, Secure computing, Security/Cryptography, Ubuntu Linux, Utilities | 1 Comment

Using diff

diff is a *nix command that takes two files and compares them, reporting on the differences between them. For example: $ diff foo.bar foo.bar $ When the files are identical, no output is generated (as in this case, comparing a … Continue reading

Posted in Command Line, computer science, How-To, Open source software, Practical Cryptography, Programmer's Tools, Secure computing, Security/Cryptography, Utilities | Comments Off on Using diff

My Free Logo Adventure

It’s more than just turtles these days with heavy-duty Logo. Continue reading

Posted in Education, How-To, Open Sauce, Open source software | Comments Off on My Free Logo Adventure

Open Sauce, reborn.

If you read the popular computer magazine Computer Power User during the first decade of this century, you may have seen my column, Open Sauce. From the first issue of CPU until a year or so ago, you could read … Continue reading

Posted in Open Sauce, Open source software | Comments Off on Open Sauce, reborn.

Another good blog, more cool open source software

Check out Little Ubuntu for some good stuff like this list of Awesome Ubuntu/Linux Apps you might not know about and this followup, Awesome Ubuntu/Linux Apps you might not know about V2.

Posted in Good blogs to follow, Open source software | Comments Off on Another good blog, more cool open source software