This can be used to avoid TIOCSTI ioctl terminal injection and other security attacks against ... security risk of privilege escalation through TIOCSTI/TIOCLINUX ioctl command inje…This can be used to avoid TIOCSTI ioctl terminal injection and other security attacks against ... security risk of privilege escalation through TIOCSTI/TIOCLINUX ioctl command inje…higher, older kernels will raise inappropriate ioctl for device error. AUTHORS Eric Biederman <[email protected]>, Karelterminal (using the value of $ COLUMNS , and ioctl (2) if available, or falling backsince the terminal modes are altered via ioctl (2). Aliases If tput is invokedcalculated using the value of $ COLUMNS , and ioctl (2) if available, or falling backwith serial consoles, that do not use ioctl (2) but just byte streams and breakscalculated using the value of $ COLUMNS , and ioctl (2) if available, or falling back