Shell Programming and Scripting

$ 
$ # Print the file "computer_data.txt" that has information of all PCs in the network
$                                                                                    
$ cat computer_data.txt                                                              
*******************************************************************************      
Serial                                                                               
123456                                                                               

Computer IP Address
lo0: flags=12345687<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ffff0000                                                 
bge0: flags=1234667<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 2   
inet 1.2.3.4 netmask fff00000 broadcast 1.2.3.4                                 

Make of Machine
SunOS test 5.10 Generic_123456-02 sun4u sparc SUNW,Sun-Fire-V440

CPU Processor Info
The physical processor has 1 virtual processor (0)
UltraSPARC-IIIi (portid 0 impl 0x16 ver 0x18 clock 1002 MHz)
The physical processor has 1 virtual processor (1)          
UltraSPARC-IIIi (portid 1 impl 0x16 ver 0x18 clock 1002 MHz)

Memory Info
Memory size: 4144 Megabytes

Disk Info
Vendor: SEAGATE Product: ST123456LSUN22G Revision: 0101 Serial No: 12345678 
Size: 73.40GB <73400057856 bytes>                                           
Vendor: SEAGATE Product: ST13456LSUN12G Revision: 0202 Serial No: 12345678  
Size: 73.40GB <73400057856 bytes>                                           
*******************************************************************************

*******************************************************************************
Serial                                                                         
1357921                                                                        

Computer IP Address
lo0: flags=12345687<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ffff0000                                                 
bge0: flags=1234667<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 2   
inet 1.2.3.5 netmask fff00000 broadcast 1.2.3.4                                 

Make of Machine
SunOS test1 5.10 Generic_123456-02 sun4u sparc SUNW,Sun-Fire-V440

CPU Processor Info
The physical processor has 1 virtual processor (0)
UltraSPARC-IIIi (portid 0 impl 0x16 ver 0x18 clock 1002 MHz)
The physical processor has 1 virtual processor (1)          
UltraSPARC-IIIi (portid 1 impl 0x16 ver 0x18 clock 1002 MHz)

Memory Info
Memory size: 8144 Megabytes

Disk Info
Vendor: SEAGATE Product: ST123456LSUN22G Revision: 0101 Serial No: 12345678 
Size: 73.40GB <73400057856 bytes>                                           
Vendor: SEAGATE Product: ST13456LSUN12G Revision: 0202 Serial No: 12345678
Size: 73.40GB <73400057856 bytes>
*******************************************************************************

$
$ # Display the awk script "block.awk" that will process a modified version of "computer_data.txt"
$
$ cat block.awk
BEGIN {
  FS = "\n"; RS = "\n~\n"; OFS = "\n";
  print "Serial\tComputer IP Address\tMake of Machine\tCPU Processor Info\tMemory Info\tVendor\tSize"
}

{
serial = $3
split($8,x," ");  ipaddr = x[2]
split($10,x," "); make = x[1] " " x[2]
split($13,x," "); cpu = x[1]
split($17,x," "); mem = x[3] " " x[4]
split($19,x," "); vndr = x[2]
split($20,x," "); size = x[2]
print serial "\t" ipaddr "\t" make "\t" cpu "\t" mem "\t" vndr "\t" size
}
$
$
$ # Start processing now. Note that "sed" is used to (a) remove blank lines and (b) replace each
$ # line consisting of "*" characters by a single "~" character.
$
$ sed -e '/^$/d' -e 's/^\*\**/~/g' computer_data.txt | awk -f block.awk
Serial  Computer IP Address     Make of Machine CPU Processor Info      Memory Info     Vendor  Size
123456  1.2.3.4 SunOS test      UltraSPARC-IIIi 4144 Megabytes  SEAGATE 73.40GB
1357921 1.2.3.5 SunOS test1     UltraSPARC-IIIi 8144 Megabytes  SEAGATE 73.40GB
$
$