Bash sup­ports a sur­pris­ing num­ber of string manip­u­la­tion oper­a­tions. Unfor­tu­nately, these tools lack a uni­fied focus. Some are a sub­set of para­me­ter sub­sti­tu­tion, and oth­ers fall under the func­tion­al­ity of the UNIX expr com­mand. This results in incon­sis­tent com­mand syn­tax and over­lap of func­tion­al­ity, not to men­tion con­fu­sion. * This is a short expla­na­tion of...

Two ways to com­bine exist­ing pdf files stored in lists. pdf­pages A sim­ple solu­tion to com­bine mul­ti­ple pdf files is to use LaTeX respec­tively the pdf­pages pack­age. With this code you can lay­out pdf pages on a page accord­ing to some para­me­tres. You need a work­ing LaTeX instal­la­tion, e.g. texlive on debian or ubuntu. You...