692 reputation
35
bio website redhardsupra.blogspot.com
location Laurel, MD
age 37
visits member for 4 years, 7 months
seen 11 hours ago

Sep
6
comment CentOS: Install packages listed in a text file?
This is much nicer, as it will look at all the dependencies at the same time, instead of figuring them out for every single package.
Sep
6
comment How to merge output of two running log files in real-time
multitail has few relevant flags: --mergeall, and -ts As for enforcing time coherence, I've done it once, but it had to be done by every log line having a timestamp, and then wrote an awk script to rearrange the entries to be sorted by time. That's nowhere near real-time. The lesson learned on that one was that the timestamps had to be generated by the program generating them, and not the logger program, as they tend to be heavily buffered, which demolishes any notion of decent timestamping.
Aug
17
awarded  Yearling
Jul
19
comment How to print only last column?
+1 for double rev, but as a side note, rev does not work with 'wide' characters, only single byte ones, as far as I know.
Jul
19
comment vi/vim, how can I write out a number of lines to a new file
Are the addresses inclusive or exclusive?
Jul
5
comment force re-negotiation of PCIe speed on Linux
In windows I've seen it change automatically, it's a function of pci-e bus power-saving. serverfault.com/questions/226319/what-does-pcie-aspm-do seems to have a nice explanation
May
16
comment Which edac module should I enable here?
@cjm, not anymore. Memory controller on all Nehalem and newer is built into the CPU, not the North Bridge. So as long as the motherboard supports it (need more wires from memory to CPU since ECC uses 9 bits to store 8 bits with the extra redundancy), plugging in different CPU's can give you the ECC capability.
Mar
23
answered Can someone recommend a Linux Distro for purposes of just running a DNS?
Feb
15
answered Can I use pxelinux to boot from an ISOs over the network?
Feb
15
answered Tool for measuring entropy quality?
Jan
20
comment FreeNAS versus a regular (CentOS/Ubuntu) linux server?
Not hard at all, there are some unique conventions & mechanisms, but ultimately it's Unix-relatives, so it's still plain text configs, command-line, files, and pipeline processing. Everything else is 'syntactical sugar' ;) Once you set it up, you won't even notice.
Jan
19
comment FreeNAS versus a regular (CentOS/Ubuntu) linux server?
Frankly, I don't remember anymore, I had two experiments going at the same time, one at work and another at home, so there was a lot of distros/hardware/configs tossed around.
Jan
19
answered FreeNAS versus a regular (CentOS/Ubuntu) linux server?
Jan
14
answered How do I delete a file whose name begins with “-” (hyphen a.k.a. dash or minus)?
Jan
10
comment What is the most high-performance Linux filesystem for storing a lot of small files (HDD, not SSD)?
If you know which files are going to be big/not changing very often, and which are going to be small/frequently changing, you might want to create two filesystems with different options on them, more suited to each scenario. If you need them to be accessible as they were a part of the same structure, you can do some tricks with mount, symlinks.
Jan
3
comment System hanging when it runs out of memory
You CANNOT prevent resource exhaustion, you can only manage it.
Jan
3
comment System hanging when it runs out of memory
Use zcache/zram/compcache (they've changed names quite a bit), it does wonders for low-RAM systems.
Dec
22
comment How to disable requesting AAAA records when I have no IPv6 address?
Have you removed ::1 and other ipv6 addresses from your /etc/hosts?
Dec
20
comment Linux executable sandboxing?
QEMU in non-system mode?
Dec
19
answered discribe in details tha boot process of any linux system