2,705 reputation
725
bio website lekensteyn.nl
location Netherlands
age 20
visits member for 3 years, 8 months
seen 4 hours ago

Former Kubuntu desktop user, now using Arch Linux. Open-source enthusiast, programmer.

Interests: network protocols, Linux kernel, server administration, Android, breaking & fixing stuff.


Apr
14
comment Captured packets with tcpdump vs. tcpdump > file
SSH is only detected and provided as a hint to Wireshark GTK/QT, not tshark.
Apr
6
comment I accidentally typed password into bash command line
@TNW I got used to typing HISTFILE= instead of unset HISTFILE (which is also a tiny bit longer). There is no specific reason for doing it this way.
Apr
3
comment I accidentally typed password into bash command line
Setting HISTFILE= is enough. From bash(1): If unset, the command history is not saved when a shell exits.
Mar
22
comment sshfs mount without compression or encryption
By default, socat TCP-LISTEN listens on all interfaces. To limit to one specific network interface (e.g., localhost), use the ,bind=127.0.0.1 option. To allow multiple connections to the server, add the ,fork option. Making a read-only server? Add -R to the EXEC command. In the end, it will look like this: socat TCP-LISTEN:7777,fork,bind=127.0.0.1 EXEC:'/usr/lib/sftp-server -R' (on Arch Linux, I had to use /usr/lib/ssh/sftp-server instead).
Feb
16
comment Looking for a tool to inspect HTTP data between a mobile phone and AV receiver
If your phone is rooted, I suggest to run tcpdump on it via ssh/adb. Then use wireshark to open the pcap file with the filter http (this assumes that the communication happens over HTTP, not HTTPS or some other protocol).
Jan
26
comment Linux: How can I delete all files whose file name is more than X characters in length?
@Kitsos I did not say faster, but flexible. If you need to post-process the file list, then external programs may be easier than using a find regex. Your bash answer will fail with newlines. Consider a file name names foo\nbar (with an embedded newline). Then the first iteration will read foo and the second one bar. If you had files named foo or bar, then you will lose them, even if the length of foo\nbar is longer than five (seven). Another useful property find is that the -delete options removes empty directories too.
Jan
16
comment Linux: How can I delete all files whose file name is more than X characters in length?
Forking is expensive, this command does not scale up with thousands of file (yes, I have encountered that). The name=$(basename "$file") can be replace with name=${file##*/} (Bash prefix substitution with nothing).
Nov
30
comment Limit program's (Viber for Linux) access only to certain directory
Be very careful not to run Viber as root (after chroot, you will be root unless you change user). Since Viber is a presumably a GUI application, it will also have access to all other visisble windows by default. For the "easiest" separation using virtualization software, I would personally use QEMU (KVM), but others like VirtualBox should work fine too. In other cases, I try to use AppArmor.
Nov
9
comment What is the correct cipher name for RC4 in Chrome?
@gentmatt See iana.org/assignments/tls-parameters/… for a list of all cipher suites. You can ignore the anonymous, export, PSK and KRB5 cipher suites as they are not used. 0xC011 is TLS_ECDHE_RSA_WITH_RC4_128_SHA. Missing RC4 cipher suites in this list are 0xC002,0xC007,0xC00C.
Oct
21
comment What are the Compile time considerations to reduce the size of binary on Linux?
@nyk_mat Is this about the Linux kernel or a program that is intended to run on Linux? In case of the Linux kernel, use make menuconfig and disable what you do not need. For other programs, check whether you can disable features (for autoconf projects, ./configure --disable-FEATURE --without-PACKAGE where FEATURE and PACKAGE have to be replaced. See ./configure --help)
Oct
16
comment bbswitch fails to turn off discrete graphics
@bharat_iyengar Following the README, you see that you might have to update your initial ramdisk. I am not so familiar with Fedora, but according to their wiki, you can run mkinitrd. As Fedora seems to use systemd, they likely use kmod too. Usually you do not need to enable the card on shutdown.
Oct
5
comment Force https performance
Apache does not ship with this module by default, the performance issue that OP is describing is not related to HTTPS on its own, but premature optimization / stupid configuration.
Oct
5
comment Force https performance
Possible duplicate of security.stackexchange.com/q/43376/2630? (which has more context). David, you do not have to use Apache... you can also use nginx which has a very clean configuration syntax. See nginx.org/en/docs/http/converting_rewrite_rules.html if you want to switch.
Sep
9
comment How does SSD Wear Leveling work?
wrt AHCI vs IDE, have you tried superuser.com/q/471102/47108?
Aug
29
comment Logitech T400 Zone Touch Mouse not pairing to unifying receiver
Could it be paired with another receiver in your neighborhood while that machine is still powered on?
Aug
17
comment iftop - how to select a wireless USB device
Have you tried man iftop?
Jul
10
comment Where do I download Windows 7 (legally from Microsoft)?
There exists a longer list for other languages on sites.google.com/site/linuxlablibrary/windows-iso. I have also read on a Dutch forum that removing sources\ei.cfg allows you to turn an installation ISO into any of the Starter (x86), Home Basic, Home Premium and Ultimate versions. (oh, that was stated by Karan too :))
Jun
27
comment pidgin & pidgin-data version conflict
@Teifi You should use apt-cache policy pidgin pidgin-data to determine where the packages are installed from.
Jun
21
comment MiniITX-based NAS can't shutdown properly when Wake-on-Lan is enabled in BIOS
@Mr.Goodkat Still having this issue? Since you mentioned Debian, can you attach the full output of dmesg and pastebin the output of sudo acpidump > acpidump.txt somewhere?
Jun
18
comment Does VT-d need hardware support (besides the CPU)?
That user does not look like a GA employee. Isn't Z86 Express referred to from Z68X? My question still stands, is VT-d support dependent on the hardware (motherboard!) or firmware (BIOS)?