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Back in '77 I worked with Steve Bourne on /bin/sh (little known fact: like awk, sh was named for its inventors, 'S' for Steve and 'H' for Humbert) and was responsible for the 'done' keyword. Following that I alternately pursued computer programming, field anthropology, and general philology; I currently work for an organization that has no name in the field of complex system obfuscation.

Oct
8
awarded  Good Answer
Oct
8
comment Massive, unpredictable I/O performance drop in Linux
"Low I/O performance which persists until reboot" can be a broken/buggy device that seizes the bus too often for too long which is maddeningly hard to diagnose short of swapping out hardware.
Oct
7
awarded  Nice Answer
Oct
7
comment Should I care for applications that increase the system Load in order to prevent overheating?
The output of lm-sensors is very system dependent and will often report sensor data with approximate naming. If that is the only temperature reported by sensors it is almost certainly the CPU temperature. On AMD quad-core cpus (among others), the PCI controller has migrated onto the CPU chip from its historically separate "northbridge" chip.
Oct
7
comment Should I care for applications that increase the system Load in order to prevent overheating?
If the load average (that is, number of jobs in the ready-to-run state) goes above 4, the others will just have to wait. You can't use more than 100% of a core even if there are 23 jobs ready to use it.
Oct
7
comment Why is Linux's filesystem designed as a single directory tree?
+1 nice way to turn the question around
Oct
7
comment Should I care for applications that increase the system Load in order to prevent overheating?
You might also be able to turn off a core or two and not have to reduce the clock speed. A computer that is using half its cores is infinitely faster than one that shut down because of thermal overload.
Oct
7
answered Why is Linux's filesystem designed as a single directory tree?
Oct
7
answered Should I care for applications that increase the system Load in order to prevent overheating?
Oct
6
answered Why are sort options -c (check if sorted) and -o (write to output file) not compatiable
Oct
6
comment fstab doesn't mount after boot of a virtual machine
To amplify @iain, since mount -a works properly at some time after boot, it is almost certainly a sequencing issue. You might try adding bootwait to the fstab options as described in fstab(5).
Oct
6
comment Rsnapshot via SSH speed issue
You've got --bwlimit set to 16KB/sec but the rsync throttling mechanism is crude. What happens if you double that number or remove the argument altogether?
Oct
4
comment Using kernel cryptographic functions
If I have had access sufficient to subvert files in /usr/bin, then I've probably been able to subvert your kernel modules and anything else I want. Saying "I trust the kernel" in such a scenario is foolhardy.
Oct
3
comment Getting terminal access on old, strange hardware
Based on my experience with HP lab equipment (and sorry to say HP-UX) I highly doubt it. Even though it's got unix under the hood, they liked to make their devices turnkey and hid the OS so it would act like a toaster. You might find some RS-232 pins on the motherboard for diagnostic purposes which just might get you a console. Happy hunting.
Oct
2
comment stdin : is not in tty
That seems like a really complex way to write mysqldump --host db_host
Oct
1
comment recover partially overwritten tape from tar -c
Nopey. dd cannot do anything that the device driver doesn't afford and I've never seen any commercial drivers that do what you are hoping (writing an EOF at a specific location despite preceding junk). This is why people who have had too much experience with magtape are so glad we don't see much of it any longer. With paper-tape (which I never used) you could at least see the defects and fix them with a knife and glue, if only magtape were as forgiving.
Sep
30
comment How to create a short path?
I strongly recommend the tools that @slm mentions over the link or alias suggestions. Not having to specify and remember your shorthand names really lightens your memory burden. ("Was that edxPhy2013 or EDXphy2013 or Phy2013???" who needs that?)
Sep
30
comment How to create a short path?
+1 for mention of the vastly underrated autojump. Typing $ j phys to get to …EDX/physics2013/ has become one of the few shell enhancements I rely upon. As the autojump author notes from an informal survey 10–20% of shell commands are cd.
Sep
30
comment How to auto-start my bash_profile?
Not an exact duplicate, but close enough: new terminals and terminals spawned by screen are not login shells. See the linked answer for further details.
Sep
30
answered recover partially overwritten tape from tar -c