A chronological documentation test project, nothing serious, really!
As in almost any programming language, you can use functions to group pieces of code in a more logical way or practice the divine art of recursion. Declaring a function is just a matter of writing function my_func { my_code }. Calling a function is just like calling another program, you just write its name. […]
The for loop is a little bit different from other programming languages. Basically, it let’s you iterate over a series of ‘words’ within a string. The while executes a piece of code if the control expression is true, and only stops when it is false (or a explicit break is found within the executed code. […]
Theory and quick reference There are 3 file descriptors, stdin, stdout and stderr (std=standard). Basically you can: redirect stdout to a file redirect stderr to a file redirect stdout to a stderr redirect stderr to a stdout redirect stderr and stdout to a file redirect stderr and stdout to stdout redirect stderr and stdout to […]
Everyone has done one of the following to make a quick backup of a file: $ cp filename filename-old $ cp filename-old filename These seem fairly straightforward, what could possibly make them more efficient? Let’s look at an example $ cp filename{,-old} $ cp filename{-old,} $ cp filename{-v1,-v2} Brace expansion can take place anywhere in […]
This is my version of the shell script “Shell scripts for archiving digital photos in directories by date“. It utilizes the exiftags command available in most linux distributions like Gentoo and debian Linux. Though the metacam program is also usefull since it can read Nikon NEF-files.Here’s an example of a directory tree they create: 2006 […]