Raspberry Pi/Serial Number

Serial Number

Simple Awk:

cat /proc/cpuinfo | grep Serial | awk '{print $3}'

Bash:

cat /proc/cpuinfo | perl -n -e '/^Serial[ ]*: ([0-9a-f]{16})$/ && print "$1\n"'
grep -Po '^Serial\s*:\s*\K[[:xdigit:]]{16}' /proc/cpuinfo

Pure Bash:

pattern='^Serial.*([[:xdigit:]]{16})$'
while read -r line
do
    if [[ $line =~ $pattern ]]
    then
        echo "${BASH_REMATCH[1]}"
    fi
done < /proc/cpuinfo

Bash Awk:

awk '/^Serial\s*:\s/{print $3}' /proc/cpuinfo

Python:

def getserial():
  # Extract serial from cpuinfo file
  cpuserial = "0000000000000000"
  try:
    f = open('/proc/cpuinfo','r')
    for line in f:
      if line[0:6]=='Serial':
        cpuserial = line[10:26]
    f.close()
  except:
    cpuserial = "ERROR000000000"

  return cpuserial

References:

• setup - How do I get the serial number? - Raspberry Pi Stack Exchange - http://raspberrypi.stackexchange.com/questions/2086/how-do-i-get-the-serial-number