Category Archives: Command Line

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

Linux Command Line Gold

There’s nothing like a command line for when you need to get things done. Here are some resources (maybe repeats from years past?) that can give you an edge when you’re looking for a fast and efficient way to do … Continue reading

Posted in Command Line, How-To, How-to Websites, Utilities | Comments Off on Linux Command Line Gold

Command line-fu from Foogazi

You only really get better at the command line by using the command line, so it might seem counter-intuitive to write about 10 Linux Commands You Probably Don’t Use. If you don’t use the command line, there’s a lot more … Continue reading

Posted in Command Line, How-To, How-to Websites | Comments Off on Command line-fu from Foogazi

More Linux Tips from IBM

There are good reasons so many Linux wizards like, no, LOVE the command line. If you know what you’re doing, it can be way faster and easier to use than fiddling around with mouse pointers and windows and so on. … Continue reading

Posted in Command Line, How-To, IBM Linux Articles | Comments Off on More Linux Tips from IBM

The Ultimate Unix Toolbox?

Unix Toolbox is not for newbies. It’s the real stuff: command line commands that you need if you’re doing real work with real systems. Want to set disk quotas? Change MySQL logins? Set file permission? Encrypt partitions? All those questions, … Continue reading

Posted in Command Line, How-To, Linux Tech Talk | Comments Off on The Ultimate Unix Toolbox?

This is what computing is all about

One key–but unstated–objective of commercial operating systems (that is, Windows and Mac) is to make using a computer like using a car. The idea is to hide all the messy technology bits. The problem with that approach is that the … Continue reading

Posted in Command Line, How-To | Comments Off on This is what computing is all about

What NOT to do with your old computers

Why throw away your old obsolete PCs when you can re-purpose them as a file/print server, firewall or some other single-purpose appliance? People have been doing this forever–at least since about 1988, when those old dual-floppy IBM 5150 PCs started … Continue reading

Posted in Command Line, How-To, Upgrades | Comments Off on What NOT to do with your old computers

Linux Performance Tuning

If you’re interested in tweaking your system, check out A three-pronged attack on performance, an article by Uruguyan systems engineer Federico Kereki, and posted on the ultimate Linux portal, Linux.com. Chances are good that whatever your hardware, Linux will run … Continue reading

Posted in Command Line, How-To, Performance Tuning | Comments Off on Linux Performance Tuning