a nice tmux look configuration

The default satus bar of tmux looks poor and can be improved. A possible source: https://github.com/gpakosz/.tmux

git clone https://github.com/gpakosz/.tmux.git
ln -s -f .tmux/.tmux.conf
cp .tmux/.tmux.conf.local .

Extract text from PDF, from the command line

pdfs-512pdftotext is a command line tool for converting PDF files to plain text. Included by default with many Linux distributions.

$ pdftotext file.pdf

The gs (Ghostscript) program can also handle the process:
$ gs -sDEVICE=txtwrite -o extractedText.txt input.pdf