Linux Tools and Things

Well, this basically includes my tools for linux and stuffs,

+---------------------------------------------------------+
|                      Applications                       |
+           +---------------------------------------------+
+           +---------------------------------------------+
|           |              System Libraries               |
|-----------+---------------------------------------------+
+---------------------------------------------------------+
|                  System call Interface                  |
+---------------------------------------------------------+
+--------------------------------------------------------+
+-         VFS         -++-    Sockets     -+------------+
+-----------------------++------------------| Scheduler  |
|     File Systems      ||     TCP/UDP      |            |
+-----------------------+-------------------+------------+
+-   Volume Manager    -|        IP         |  Virtual   |
+-----------------------+-------------------|   Memory   |
|     Block device      |     Ethernet      |            |
+--------------------------------------------------------+
|                     Device Drivers                     |
+--------------------------------------------------------+
                         | 
                         |
                         v
            +-------------------------------+
            |          I/O bridge           |
            +-------------------------------+
                         +
                         |
                         |
                         v
<--+-------------------------------------------------+---->
   |                                                 |
   v                                                 v
+-  I/O controller  -+------------------------------------------+
|    [disk/swap]     |        Network Controller [Port]         |
+--------------------+------------------------------------------+

##Tools

1) Strace 2) ltrace 3) ss 4) Netstat for tcp|udp|IP|ethernet|sockets 5) iptraf Ethernet|IP|TCP|UDP 6) tcpdump Ethernet 7) vmstat slabtop free [Virtual memory dram] 8) top ps cpu 9) perf tiptop Memory bus 10) iostat iotop blktrace Block device interface 11) sysdig syscall interface 12) swapon for swap 13) ethtool snmpget lldptool nicstat ip Network controller

Process status listing, ascii tree style ps -ef f````
Virtual memory statistics and more
vmstat -Sm -l
mpstat for multiprocessor stats
Main memory usage free -m
strace is syscall tracer
tcpdump tcpdump -i eth0 -w pewpewfile
nicstat for network stats [Look into it more]
sar system activity reporter
ss -mop socket stats
For seeing the memory used by a process: ps -o user,%mem,command ax | sort -b -k3 -r | grep "evilvte"
To share command of one shell to another one, just do tty then <command> > /dev/pts/<number>