Linux is going (http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commit;h=f8df13e0a901fe55631fed66562369b4dba40f8b) to implement \E[3J to allow scrambling content of console including scroll-back buffer (http://thread.gmane.org/gmane.linux.kernel/1125792). This is useful at terminal lock to disallow attacker to scroll visible window back and to see sensitive data. Other \E[J sequences do not blank history. Terminal reset (\Ec) or DECSRC are not suitable for extension too beacuse they reset font, keyboard locks, unicode mode etc. that are needed after unlocking session. \E[3J is superset of \E[2J. IOW it clears visible screen too. Signed-off-by: Petr PÃsaÅ <ppisar@xxxxxxxxxx> --- man4/console_codes.4 | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/man4/console_codes.4 b/man4/console_codes.4 index 2a806b7..62f2247 100644 --- a/man4/console_codes.4 +++ b/man4/console_codes.4 @@ -188,6 +188,8 @@ H CUP Move cursor to the indicated row, column (origin at 1,1). J ED Erase display (default: from cursor to end of display). ESC [ 1 J: erase from start to cursor. ESC [ 2 J: erase whole display. + ESC [ 3 J: erase whole display including scroll-back + buffer. K EL Erase line (default: from cursor to end of line). ESC [ 1 K: erase from start of line to cursor. ESC [ 2 K: erase whole line. -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
