2,928 reputation
1027
bio website lekensteyn.nl
location Netherlands
age 21
visits member for 4 years, 2 months
seen yesterday

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

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


Oct
3
comment How to manually trim an SSD in Windows 7?
The source code is unfortunately lost, but it appears that the tool writes <DRIVELETTER>:\_TRIM_, invokes TRIM on that and then removes it again.
Sep
14
comment browse a library of iso without mounting each iso
@Ƭᴇcʜιᴇ007 Not exactly a duplicate as the OP mentions tar -t which is not a Windows command. My guess is that OP is using Linux, but (s)he needs to clarify that.
Jul
1
comment What's the difference between --param=“value” and “--param=value”?
And the shell-script equivalent: printargs(){ local arg; for arg; do echo "$arg"; done; }
Jun
21
comment Why Firefox alert me about HTTPs “Untrusted” Connection on Positivessl - Comodo certificate?
You should not include the root CA. It is no use (it does not help in building a trust path) and enlarges the initial handshake size. Please test your setup with the ssllabs tool I linked above.
Jun
20
comment chmod 700 -R ~ - is it safe?
This GNU coreutils command has the same effect: chmod -R ~ go-rwx,u+rwX. It first removes group and world permissions, then adds read and write to the user and execute to directories. Warning: some files are expected to have an execute bit (like those in ~/bin/ or node_modules/bin/).
Jun
14
comment Why Firefox alert me about HTTPs “Untrusted” Connection on Positivessl - Comodo certificate?
@lito If I'm not mistaken, you should key + cert or pfx, not both. If you have a single file (for pfx) with keys and certs concatenated, you should append the CA bundle to that file. Otherwise, append the file to the cert. I suggest to keep the keys and certs separate anyway so you can set very tigh permissions on the keys.
Jun
9
comment Can I fork a copy command on ReadyNAS SSH?
If rsync gets interrupted, you will still be left with a temporary file. It just helps you by not having to copy existing files over. What you actually need for persistent sessions is GNU screen as poste by Jake.
Jun
8
comment Can I fork a copy command on ReadyNAS SSH?
What do you mean by "fork a cp or mv process"? Usually shell already forks and executes those programs. What is your goal? Resuming copies? See rsync.
May
20
comment USB backlit keyboard power consumption
Note: this information is reported by the device and may be incorrect and does not reflect the actual usage.
May
11
comment Openvpn to stream media to Android
@JB0x2D1 Install a server (nginx for example), change its configuration to listen on at least the OpenVPN tun/tap interface (or all addresses). After that, you can access your media via the webservice listening on the OpenVPN server's private IP address. Do not forget to configure permissions appropriately, i.e., the nginx user must be able to read files and descend directories.
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)