{{case_clause,{error,enotconn}}…

Today i find all posix errors in http://erldocs.com/R14B/kernel/inet.html?i=11&search=inet

I think it’ll be usefull.

setcap ‘cap_net_bind_service = + ep’ / usr/lib/erlang/erts-5.6.5/bin/beam
setcap ‘cap_net_bind_service = + ep’ / usr/lib/erlang/erts-5.6.5/bin/beam.smp

Naturally with your version of erts.

I found bash script for runing something application from terminal and uncoupling this application from terminal:

#!/bin/bash
if [ -z "$TEMP" ]; then
   TEMP='/tmp';
fi;
$@ > "$TEMP/$$.stdout.log" 2> "$TEMP/$$.stderr.log" &
echo "fork: \"$@\" : $$"

#!/bin/bash

read -p "Input your name in gmail: " username;
read -p "Input your password in gmail: " password;

echo -e "Checking for new messages... \c"

atomlines=`wget -T 3 -t 1 -q --secure-protocol=TLSv1 \
 --no-check-certificate \
 --user=$username --password= $password \
 https://mail.google.com/mail/feed/atom -O - \
 | wc -l`

echo -e "\r\c"

[ $atomlines -gt "8" ] \
 && echo -e " You have new gmail." \
 || echo -e " No new gmail."

I hope it is useful to you. p.s. The remaining useful scripts can be found at – https: / / github.com / onlyshk / bash-snippets

On github, created a repository bash-snippets where and I will add a script written in bash, which I hope were helpful would be useful to you.

Git – https://github.com/onlyshk/bash-snippets
License – GNU/GPL v3

Participation in the project are welcome. Who has accumulated useful scripts and I think everyone inveterate * nix user any fork this project in github and add your own scripts. Then are connected into a single repository. However, we collect useful communities in the collection of scripts.

I hope it’ll be helpful.

CC=gcc
LDLIBS='gtk-config --libs'
CFLAGS=-Wall -g 'gtk-config --cflags'
gtktest: gtktest.o
    $(CC) $(LDLIBS) gtktest.o -o gtktest
gtktest.o: gtktest.c
    $(CC) $(CFLAGS) -c gtktest.c
clean:
rm -f gtktest
rm -f *.o

About the performance of the system developers have not cheated, the system is really very quick and easy. Tests on hand I have not, quote from the wiki says:

Initial testing by Linux Magazine reviewer Christopher Smart has shown that Lubuntu’s RAM usage is about half of Xubuntu’s and Ubuntu’s on a normal installation and desktop use, and one third less on live CD use

Lubuntu includes a suite of project LXDE, as well as several programs are not part of LXDE:

• Abiword
• Gnumeric
• pidgin
• xchat
• Chromium
• Cheese
• Gnome MPlayer
• Transmission

Lxde screenshot:

If you need a fast and lightweight system with the necessary software in the set, I advise you to pay attention to Lubuntu.

I recently read a sample job interview question:

Write a function to convert an integer to a string. Assume you do not have access to library functions i.e., itoa(), etc…

How would you go about this?

How do we all still convert int to char * without the use third-party libraries or including the stdlib?

Here I show you my version, as well as options that are offered to distinguished site visitors stackoverflow.com

To start my variant. Before his show a few words about the code: Yes it is longish and generally sotstoit of 3 options:
– Get string length
– Reverse the line
– Convert from int -> char *

Indeed davolno long and is not a trivial move, but I think it will be useful for beginners in C. The code is as follows:

static char*
itoa(int n, char s[])
{
    int i, sign;
    if ((sign = n) < 0)
        n = -n;
    i = 0;
    do
    {
      s[i++] = n % 10 + '0';
    } while ((n /= 10) > 0);   

    if (sign < 0)
        s[i++] = '-';

    s[i] = '\0';
    reverse(s);

    return s;
}

int strlen(const char* str)
{
   int i = 0;
   while (str != '')
   {
       i++;
       str++;
   }

   return i;
}

static void
reverse(char s[])
{
    int i, j;
    char c;

    for (i = 0, j = strlen(s)-1; i<j; i++, j--) {
        c = s[i];
        s[i] = s[j];
        s[j] = c;
    }
}

char* itoa(int val, int base){

    static char buf[32] = {0};

    int i = 30;

    for(; val && i ; --i, val /= base)

        buf[i] = "0123456789abcdef"[val % base];

    return &buf[i+1];

}

Colored with dumpz.org

Next variant:

int num = ...;
   char res[MaxDigitCount];
   int len = 0;
   for(; num > 0; ++len)
   {
      res[len] = num%10+'0';
      num/=10;
   }
   res[len] = 0; //null-terminating

   //now we need to reverse res
   for(int i = 0; i < len/2; ++i)
   {
       char c = res[i]; res[i] = res[len-i-1]; res[len-i-1] = c;
   }

Colored with dumpz.org

And last variant:

int n = INT_MIN;
char buffer[50];
int i = 0;

bool isNeg = n<0;

unsigned int n1 = isNeg ? -n : n;

while(n1!=0)
{
    buffer[i++] = n1%10+'0';
    n1=n1/10;
}

if(isNeg)
    buffer[i++] = '-';

buffer[i] = '';

for(int t = 0; t < i/2; t++)
{
    buffer[t] ^= buffer[i-t-1];
    buffer[i-t-1] ^= buffer[t];
    buffer[t] ^= buffer[i-t-1];
}

printf(buffer);

Colored with dumpz.org

And how would you solved this problem?

After that you can save your .emacs file and then open emacs and now you can start to coding in Erlang.