dump the contents of a virtual console to stdout
screendump [ N ]
The screendump command dumps the contents of virtual console N , (or the current console if N is omitted) to standard out. Just saying cat /dev/vcsN has a similar effect.
For security reasons, screendump uses linux devices "virtual console screen" and "virtual console screen with attributes" to give access for screendump. Ensure these files exist, using cd /dev for i in 0 1 2 3 ...; do mknod vcs$i c 7 $i mknod vcsa$i c 7 `expr 128 + $i` done (filling in the ellipses) and give the device files appropriate permis‐ sions, or run screendump as root.
setterm(1) 2002-02-24 SCREENDUMP(1)