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computing:beaglebone [2018/11/25 01:32] – external edit 127.0.0.1computing:beaglebone [2019/04/06 20:14] – oemb1905
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 Some other common speeds are 9600, 57600, 38400, 19200.  For the Beagle Bone black, I always use 115200.  These speeds are in baud. Some other common speeds are 9600, 57600, 38400, 19200.  For the Beagle Bone black, I always use 115200.  These speeds are in baud.
 +
 +-- -- -- -- -- -- 
 +
 +This section below is from some revisions I wrote for Jason's beaglebone stripping tutorial ... 
 +
 +==Clean Up Post-Install==
 +
 +  apt-get install screen deborphan ntp 
 +
 +the new version has an ntp server
 +
 +be sure to fix /etc/network/interfaces before removing connman - uncomment the lines for DHCP for eth0, remove extraneous lines and the manual entry that comes stock with bbb ... then connect to the beaglebone with ssh and screen ...
 +
 +  ssh -t root@<x.x.x.x> screen -DRO 
 +
 +  for i in udhcpd chromium-codecs-ffmpeg-extra connman lximage-qt lxmenu-data pcmanfm-qt qupzilla xserver-xorg-core "light*" chromium-browser nodejs "lxqt*" xserver-common "apache2*" bluez "xfonts*" "x11-*" "x11proto-*" build-essential alsa-utils; do apt-get -y purge $i; done
 +
 +After this command, the ssh session hung, and we could only access with screen at a different speed of 9600 ... but, as long as you took care of /etc/network/interfaces above, then a reboot (worst case) or waiting should bring it back up.
 +
 +  apt-get --purge autoremove 
 +
 +  apt-get --purge remove `deborphan` OR [apt-get purge `deborphan`] OR [apt-get purge $(deborphan)]
 +
 +run deborphan a few times untill all is removed
 +
 +  apt update
 +  apt dist-upgrade
 +  apt clean
 +
 +edit /etc/issue.net to remove the goofy ssh splash
 +
 +  cd /var/log && rm lastlog && ln -s /dev/null lastlog
 +  cd /etc/cron.daily && mv man-db man-db.disabled [if it exists]
 +
 +to find latest writes to disk: find / -mount -newermt 14:44:00 [to see what logs are post-updates, i.e., for limiting writes to eMMC]
 +
 +Verify /etc/fstab configuration, include noatime like this example
 +
 +  FROM FSTAB:
 +  UUID=57e4a3f6-7951-40ae-ad25-b445959e1c30  /  ext4  noatime,errors=remount-ro  0  1
 +  debugfs  /sys/kernel/debug  debugfs  defaults  0  0
 +
 +#if we use an external sdcard, we are less concerned with re-writes, so enable the logs on the sdcard (create directories for each location below, mountpoints, etc.)
 +  UUID=eb885f2f-28a4-49a6-99c9-3f8b0b7a871d /sdcard ext4 noatime,nofail,errors=remount-ro  0  2
 +
 +  /sdcard/tmp           /tmp            none bind,nofail 0 0
 +  /sdcard/var/log       /var/log        none bind,nofail 0 0
 +  /sdcard/var/lib/mysql /var/lib/mysql  none bind,nofail 0 0 
 +  /sdcard/var/lib/cacti/ /var/lib/cacti none bind,nofail 0 0 
 +  /sdcard/var/lib/ntp    /var/lib/ntp   none bind,nofail 0 0
 +
 +End of Jason's stripping tutorial ...
 +
 +-- -- -- -- -- 
 +
 +This tutorial is a designated "Invariant Section" of the "Technotronic" section of Haack's Wiki as described on the [[https://jonathanhaack.com/dokuwiki/doku.php?id=start|Start Page]].  This does not include the sections quoted from Jason's tutorial.
 +
 + --- //[[netcmnd@jonathanhaack.com|oemb1905]] 2019/01/13 12:22//
      
  
computing/beaglebone.txt · Last modified: 2023/02/27 00:54 by oemb1905

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