Category Archives: computing
Batteries
Lithium-ion: – Avoid complete discharge – Store/re-charge at 50%
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FTP Notes
Proftpd connections: ftptop – show current connections in realtime in a ‘top’ like format ftpwho – list current connections Restart Proftpd (Parallels Plesk/Cent OS): /etc/init.d/xinetd restart Active vs Passive FTP: A good article on this subject can be found here. MS-DOS … Continue reading
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Memory leak Netgear WNDA3100v2 USB Wifi adapter
Version 1.2 of the Windows XP driver has a memory leak – the solution is to upgrade the driver to a later version of the driver. Version 1.3 (driver date: 05/11/2009, driver version: 5.60.180.11) also appears to have a memory … Continue reading
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SRV 2019 Error (The server was unable to allocate from the system NonPaged pool because the pool was empty)
An excellent article on troubleshooting this error can be found here: http://blogs.msdn.com/b/ntdebugging/archive/2006/12/18/understanding-pool-consumption-and-event-id_3a00_–2020-or-2019.aspx
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Apache reset/delete logs
http://httpd.apache.org/docs/1.3/misc/howto.html#logreset The correct procedure is to move the logfile, then signal Apache to tell it to reopen the logfiles. Apache is signaled using the SIGHUP (-1) signal. e.g. mv access_log access_log.old kill -1 `cat httpd.pid` Note: httpd.pid is a file containing the process id of the Apache httpd … Continue reading
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Low Power PCs
Low power PCs: Tiny Green PC Raspberry Pi – approx 2 – 3.5 watts Aleutia – approx 10 watts Intel NUC – approx 11 watts LIVA Mini PC – approx 15 watts Asus Eee Box – idle approx. 20w, running approx. 22.7 – … Continue reading
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Samsung Note 2 unfortunately s note has stopped working
This obscure error can sometimes be fixed by the following steps: Go to Settings Click on Language and Input Click the cog image next to the Samsung keyboard options (even if greyed out) Click on Input Languages On English (UK), … Continue reading
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Vi Commands
Movement: h, j, k, l – left, down, up, right spacebar – right Copy/paste: Y – copy one or more lines p – paste line below current cursor P – paste line above current cursor Line numbers: :set number
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