Find processes using a deleted files

lsof | grep deleted | less

FATAL: Could not load /lib/modules/*-openvz-*/modules.dep: No such file or directory

Hi all, if you have problems with openvz and iptables fatal message, there is solution:

run command

depmod

it will return something like this

WARNING: Couldn't open directory /lib/modules/2.6.32-5-openvz-amd64: No such file or directory

FATAL: Could not open /lib/modules/2.6.32-5-openvz-amd64/modules.dep.temp for writing: No such file or directory

so create directory

mkdir /lib/modules/2.6.32-5-openvz-amd64

and run command again

depmod

ls -la /lib/modules/2.6.32-5-openvz-amd64/

total 36

drwxr-xr-x 2 root root 4096 Jan 16 14:48 .

drwxr-xr-x 3 root root 4096 Jan 16 14:48 ..

-rw-r--r-- 1 root root   45 Jan 16 14:48 modules.alias

-rw-r--r-- 1 root root   12 Jan 16 14:48 modules.alias.bin

-rw-r--r-- 1 root root    0 Jan 16 14:48 modules.dep

-rw-r--r-- 1 root root   12 Jan 16 14:48 modules.dep.bin

-rw-r--r-- 1 root root   52 Jan 16 14:48 modules.devname

-rw-r--r-- 1 root root  131 Jan 16 14:48 modules.softdep

-rw-r--r-- 1 root root   49 Jan 16 14:48 modules.symbols

-rw-r--r-- 1 root root   12 Jan 16 14:48 modules.symbols.bin

thats all :)

How to unbind port

From time to time apache after restart doesn't close used ports and You have to restart server. This we don't want. Solution is pretty simple:

find process IDs

$ lsof -i TCP:80

output:

apache2 16442 www-data    3u  IPv4 1158908      0t0  TCP s0.domain.tld:80 (CLOSE_WAIT)

...

then we kill process(es)

$ kill -9 16442

MEC TM1701M or JP108-A

Hi all, I have this mini usb to ethernet adapter. It operates in linux without problems, but I get from it only about 7mbps. I noticed, that many people do not have windows driver and they do not know for which they have to search :) If you have usb to ethernet adapter MEC TM1701M or JP108-A You have to search for Davicom DM9601 and then You will certainly successfull.

dropbear make pub key

4 Steps:
a) Generate private rsa key in a file: dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
b) Generate public rsa key in a file: dropbearkey -y -f /etc/dropbear/dropbear_rsa_host_key | grep ssh-rsa > /tmp/dropbear_rsa_host_key.pub
c) Copy the public key to the server: scp /tmp/dropbear_rsa_host_key.pub haritz@192.168.111.253:/home/haritz/.ssh/authorized_keys
d) scp or ssh indicating the path of the 'identity_file': ssh -i /etc/dropbear/dropbear_rsa_host_key haritz@192.168.111.253
The identity_file is needed (at least in my case).

fix modprobe kernel problem

uname -r

return something

depmode something

how to recompile pure-ftpd to use on VPS

short tutorial

apt-get source pure-ftpd
cd pure-ftpd-1.0.21/
nano debian/rules

line 12 add --without-capabilities

optflags=--with-everything --with-largefile --with-pam --with-privsep --with-tls --without-capabilities

apt-get build-dep pure-ftpd
dpkg-buildpackage -uc -b
cd ..
dpkg -i pure-ftpd-mysql_1.0.21-11.4_amd64.deb

Instead of using apt-pinning you can just set packages on hold:
echo package hold | dpkg --set-selections
To undo that:
echo package install | dpkg --set-selections
To view a list of "on hold" packages:
dpkg --get-selections | grep hold