984 reputation
37
bio website profiles.google.com/aecolley
location Dublin, Ireland
age 41
visits member for 2 years, 3 months
seen 12 hours ago

I'm a trained computer scientist, an experienced software engineer, and a practical system administrator.


13h
comment terminate screen monitoring serial port
Oops, markdown turned my "ctrl-\" into "ctrl-". Fixed.
13h
revised terminate screen monitoring serial port
needed to double the backslash to save it from the Markdown Backslash Eater
13h
comment Unable to use make to install Valgrind
@dleggas Aha! Then this question is uncovered as a duplicate of stackoverflow.com/questions/26564125/yosemite-and-valgrind
13h
answered SSH banner not showing
14h
answered terminate screen monitoring serial port
14h
answered “Sudo” prefixed command doesn't work; without sudo does.
14h
answered Unable to use make to install Valgrind
14h
comment SSH via cert-authority
SSH private keys are stored in PEM format, but everything else (public keys and certificates) have a nonstandard format. It's very unusual to use openssl to manipulate SSH structures; I recommend using ssh-keygen for such tasks.
1d
comment SSH via cert-authority
The openssl tag is inappropriate for this question.
1d
answered SSH via cert-authority
1d
answered How to execute 'clear' bash command before any other command is executed?
1d
answered Why does ssh -g say that address is already in use?
1d
comment rsync hangs unless I defrag ext4 filesystem
An uncommon cause of ETIMEDOUT on a TCP socket is "The other end didn't acknowledge retransmitted data after some time." I think your server is too busy to either send or receive some packets on the rsync connection. The way to confirm it is by using tcpdump (or tshark) on both sides to collect the packets for the connection, and compare timestamps to find suspicious delays when the server is busy defragmenting.
1d
answered Linux graphical password dialog trick security
1d
answered Escape sequences in output of script called from ncurses application
1d
comment how to stop the screen from blanking / blacking out?
To narrow down the problem, run xscreensaver-command -watch in an xterm somewhere. After an unwanted-screen-blank event, look to see if it output the BLANK event. If it did, then it's definitely being blanked by action of the X server. Otherwise, it's lower in the stack and you can focus on the video drivers.
1d
answered BASH: Command not running, special character '�' suddenly appeared (Ubuntu)
Dec
5
answered viewing firewalld logs via remote login to CentOS 7 server
Dec
5
comment SSH command with file redirect not working
I might also suggest sort -u -o /root/.ssh/authorized_keys /root/.ssh/authorized_keys, but check that the system's sort supports the -u flag (it's popular but not required by POSIX).
Dec
5
answered SSH command with file redirect not working