Tagged: sysadmin

Why 80 characters? 0

Hacking

Why 80 characters?

Searching for reasonable values for the *.vt100.geometry[5-6] xterm menu font-menu options in my ~/.Xdefaults file, I re-stumbled a gem of computing history as the top-answer to a question on StackOverflow, and this pretty picture of an old IBM punch-card. Inspired by a perl script within the comments, I ran this shell pipe: 2015-07-23 10:30:00 :: ~ rons@rons-VM$ find /usr/share/terminfo/ -type f -printf ‘%f\n’ | xargs -n1 infocmp | egrep -o ‘cols#[0-9]+, *lines#[0-9]+’ | sort | uniq -c | sort -nr | head 489 cols#80, lines#24 58...

ssh: no matching cipher found 0

Hacking

ssh: no matching cipher found

After a recent Ubuntu upgrade on my home machine, ssh attempts to it from the VirtualBox instance at work stopped working.   Here’s what ssh spewed back at me: no matching cipher found: client blowfish-cbc,arcfour server aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com   Impatient, I just logged in from another machine.  The VM runs CentOS 5.10 so that its environment is comparable with what [used to be] present on the majority of our production servers.   I’m an anti-RedHat bigot in the first place, and didn’t...

Mounting Windows Shares On Linux 0

Hacking

Mounting Windows Shares On Linux

There must be a gazillion posts on this, so I’m just going to concentrate on what I did wrong. First I wanted to mount the target share as NFS, but the server doesn’t export to our desktop subnet at work. I saw it was running Samba, and remembered having had it working on Windows XP, so tried that. A friend at work had an /etc/fstab line that almost worked. Turns out smbfs is deprecated and cifs is the new smbfs,...