iftop -i wlan0 -B
Info obtenida de: http://techthrob.com/2010/07/26/how-to-monitor-network-traffic-in-linux/
gs -sDEVICE=pdfwrite \ -dNOPAUSE -dBATCH -dSAFER \ -sOutputFile=combined.pdf \ first.pdf \ second.pdf \ third.pdf [...]
Info obtenida de: http://www.linuxjournal.com/content/tech-tip-using-ghostscript-convert-and-combine-files