Tag Archives: tool

Schedule meetings automatically into Google Calendar with Doodle or Calendly

Posted on by

doodle.com is a well known page for scheduling meetings or making decisions. Its calendar integration is probably less known. Doodle can export a calendar with the dates you have chosen in order to remind you to keep them blocked. When a date is fixed for a query, doodle releases the other dates. You can also add your calendar to doodle to see your availabilities right in the doodle calendar and to use such features as autofill.

If you look for something else, calendly.com is another free service that provides an interface for others to schedule a meeting with you. Dates with concurring events in your Google calendar are automatically blanked out.

 

filegive: send and receive files across computers

Posted on by

filegive easily sends or receives files point-to-point, with authentication and ciphering, and the other side only needs a Web browser. No third party server is involved in the transfer. It can use common NAT traversal protocols like uPnP and NAT-PMP, manually forwarded ports, or a public ssh server.

filegive is a commandline tool available for Linux, Windows and Mac OS.

Project page with commands and download links

How to test the thread limit on Linux

Posted on by

/* compile with: gcc -pthread -o thread-limit thread-limit.c */
/* originally from: http://www.volano.com/linuxnotes.html */

#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>

#define MAX_THREADS 100000
int i;

void run(void) {
char c;
if (i < 10)
printf(“Address of c = %u KB\n”, (unsigned int) &c / 1024);
sleep(60 * 60);
}

int main(int argc, char *argv[]) {
int rc = 0;
pthread_t thread[MAX_THREADS];
printf(“Creating threads …\n”);
for (i = 0; i < MAX_THREADS && rc == 0; i++) {
rc = pthread_create(&(thread[i]), NULL, (void *) &run, NULL);
if (rc == 0) {
pthread_detach(thread[i]);
if ((i + 1) % 1000 == 0)
printf(“%i threads so far …\n”, i + 1);
}
else
printf(“Failed with return code %i creating thread %i.\n”,
rc, i + 1);
}
exit(0);
}

Additional information

If you are an administrator of a server, you can configure various limits in /etc/security/limits.conf

Download an entire Web site for off-line viewing with wget

Posted on by

$ wget \
–recursive \
–no-clobber \
–page-requisites \
–html-extension \
–convert-links \
–restrict-file-names=windows \
–domains website.org \
–no-parent \
www.website.org/tutorials/html/

This command downloads the Web site www.website.org/tutorials/html/.

The options are:
–recursive: download the entire Web site.
–domains website.org: don’t follow links outside website.org.
–no-parent: don’t follow links outside the directory tutorials/html/.
–page-requisites: get all the elements that compose the page (images, CSS and so on).
–html-extension: save files with the .html extension.
–convert-links: convert links so that they work locally, off-line.
–restrict-file-names=windows: modify filenames so that they will work in Windows as well.
–no-clobber: don’t overwrite any existing files (used in case the download is interrupted and resumed).

Codepad

Posted on by

codepad is an online collaboration tool for exchanging code which also integrates various compilers/interpreters. After entering code, codepad will run it and print the output.
New pads can be created without registration. For each pad you get a short URL for sharing the code.

Codepad provides syntax highlighting depending on the language. Supported languages are C, C++, D, Haskell, Lua, OCaml, PHP, Perl, Python, Ruby, Scheme, and Tcl. It can be also used to share plain text.

TeXlipse

Posted on by

Standard LateX editors are optimized for small screens. But we are in 2012 and have big screens and your next monitor or laptop screen will likely even have larger resolution. The eclipse-plugin Texlipse takes advantage of this and provides an IDE for editing LateX documents with a real-time preview.

TeXlipse: Eclipse IDE for LateX

So, unless you have netbook, get the plug-in at http://texlipse.sourceforge.net/.

“Ping” a specific port

Posted on by

“Cannot connect to server”, but why?
First diagnosis is usually trying to ping the server, however sometimes it is useful to check if a particular port is reachable from your computer. So these are your tools:
  ping
gives you information if the server is up and on the time a packet needs to travel to the server and back
  nmap -v -A host
scans all open ports on the server and lists them. Useful to check which services are running.
  telnet host port if the port is reachable, the answer looks like this
    Trying 123.123.123.123...
    Connected to filesrv.nes.aau.at.
    Escape character is '^]'.
Instead of telnet, any other terminal program (for example putty) can be used as well.