ciphermethod.com

Use: netstat -tlnp | grep port

Example using netstat:
[root@trioxin2 jhopkins]# netstat -tlnp | grep 80
tcp 0 0 :::80 :::* LISTEN 4246/httpd

The above example reveals that the httpd process with a PID of 4246 is running on port 80.

To verify, you can run the ps command and grep for the application name or PID:
[root@trioxin2 jhopkins]# ps -ef | grep 4246
root 4246 1 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4249 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4250 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4251 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4252 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4253 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4254 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4255 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd
apache 4256 4246 0 13:35 ? 00:00:00 /usr/sbin/httpd

Example using fuser:
# fuser 80/tcp
80/tcp: 3130 7057 11956 11957 11958 26771 26801 30170 32433 32434 32766

# ps -ef | grep 3130
root 3130 1 0 Mar02 ? 00:01:19 /usr/sbin/apache2 -k start
www-data 7057 3130 0 Apr01 ? 00:01:18 /usr/sbin/apache2 -k start
www-data 11956 3130 0 Apr04 ? 00:00:23 /usr/sbin/apache2 -k start
www-data 11957 3130 0 Apr04 ? 00:00:38 /usr/sbin/apache2 -k start
www-data 11958 3130 0 Apr04 ? 00:00:42 /usr/sbin/apache2 -k start
www-data 26771 3130 0 Apr03 ? 00:00:54 /usr/sbin/apache2 -k start
www-data 26801 3130 0 Apr03 ? 00:00:50 /usr/sbin/apache2 -k start
…

ERROR: Firmware file “b43/ucode5.fw” not found or load failed.

Ignore drivers in /lib/firmware/b43-open and perform the following:

1. yum install b43-fwcutter wget
2. wget downloads.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2
3. tar xjf broadcom-wl-4.150.10.5.tar.bz2
4. cd broadcom-wl-4.150.10.5/driver
5. b43-fwcutter -w /lib/firmware/ wl_apsta_mimo.o
to install all firmware into /lib/firmware/b43
6. reboot

HP Mini 110 Laptop should boot and come up with wireless functioning.

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f4:43:2f:a3:93:95 = new MAC

# ifconfig eth0 down
# ifconfig eth0 hw ether f4:43:2f:a3:93:95
# ifconfig eth0 up

From a Linux BASH command line:
openssl rand -hex 6 | sed ‘s/\(..\)/\1:/g; s/.$//’

Example:
[neo@trinity ~]$ openssl rand -hex 6 | sed ‘s/\(..\)/\1:/g; s/.$//’
28:97:1c:70:73:4d

#!/bin/sh
#20100913 – Add log directories to get total log space

for x in `cat linux.servers`
do
  echo $x:
  R=`ssh $x sudo du -h /var/log | tail -1`
  N=`echo $R | cut -f1 -dM`
sum=$(($COUNT + $N))
  COUNT=$sum
  echo $COUNT $N

  echo
done