Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
How to install Easy Install for Python in Ubuntu
Answer:
EasyInstall is a package manager for the Python programming language that provides a standard format for distributing Python programs and libraries (based on the Python Eggs wrapper).
To install the EasyInstall under Ubuntu, type:
# sudo apt-get install python-setuptools python-dev build-essential
Use of ASP like tags in PHP
Answer:
In PHP, you can use ASP-like <% %> tags in addition to the usual <?php ?> tags. But you need to enable it before use.
You need to editing the php.ini
vi /etc/php.ini
And set
asp_tags = 1
Restart your web server if needed.
Connect MySQL server using C
Answer:
Below show a code sample for how to connect to MySQL server using C programming language.
#include <stdio.h>
#include <stdlib.h>
#include "mysql.h"
MYSQL mysql;
MYSQL_RES *res;
MYSQL_ROW row;
void exiterr(int exitcode)
{
fprintf( stderr, "%s\n", mysql_error(&mysql) );
exit( exitcode );
}
int main()
{
uint i = 0;
if (!(mysql_connect(&mysql,"host","username","password")))
exiterr(1);
if (mysql_select_db(&mysql,"payroll"))
exiterr(2);
if (mysql_query(&mysql,"SELECT name,rate FROM emp_master"))
exiterr(3);
if (!(res = mysql_store_result(&mysql)))
exiterr(4);
while((row = mysql_fetch_row(res))) {
for (i=0 ; i < mysql_num_fields(res); i++)
printf("%s\n",row[i]);
}
mysql_free_result(res);
mysql_close(&mysql);
}
Delete element in a hash in Perl
Answer:
You can use the delete keyword to delete elements in a hash in Perl
my $hash = {
"one" => 1,
"two" => 2,
"three" => 3
};
delete $hash->{"two"};
Code formatting and indentation in VIM
Answer:
Vim support code formatting and auto indentation - if you tell Vim to know the filetype (either by file extension, or by setting the filetype)
e.g. A simple C program (test.c)
#include
main()
{
for(int i=0;i<10;i++)
{
printf ("Hello World!\n");
}
}
Then type following in Vim command mode (by pressing Esc):
gg=G
Now the code will be formatted to:
#include
main()
{
for(int i=0;i<10;i++)
{
printf ("Hello World!\n");
}
}
