Verificar qual serviço está rodando em porta [Linux]

lsof -i TCP:3128

onde 3128 é a porta que vc deseja saber qual processo roda.

Remove NULL values from PHP arrays with 1 line [Linux]

Remove NULL values from PHP arrays with 1 line

I had an array with something like the following: Array ( [0] => [1] => test [2] => fun ). But I don't want [0], the empty value in the array.

After searching the web for a good solution, I saw that people were using anywhere from 4 to 10+ lines of code to remove null values from arrays. This is obviously overkill so I decided to tackle the problem myself.

Remove NULL values only

$new_array_without_nulls = array_filter($array_with_nulls, 'strlen');

Remove any FALSE values

This includes NULL values, EMPTY arrays, etc. Thanks to Paul Scott for pointing out this method.

$new_array_without_nulls = array_filter($array_with_nulls);

 

Jail only a specific user with vsftpd [Linux]

You have 2 options:

 

chroot_local_user=YES

chroot_list_enable=YES

chroot_list_file=/etc/vsftpd/nonchroot.list

 

# Where file /etc/vsftpd/nonchroot.list should contail the users you don’t want to chroot.

 

OR

 

chroot_list_enable=YES

chroot_list_file=/etc/vsftpd/chroot.list

 

Where the file /etc/vsftpd/chroot.list should contain the users you want to be chrooted to their home. By default all other users should have access to the / (root)

Criando plugin para o Nagios em Shell Script _ Nagios

Ativar GZIP compressão em páginas PHP

Edit php.ini:

zlib.output_compression = On

zlib.output_compression_level = 6