$gdb /opt/google/chrome/google-chrome core GNU gdb (GDB) 7.4.1-debian Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type “show copying” and “show warranty” for details. This GDB was …
Author Archives: jeffrin
what is tcp_retrans_collapse – BOOLEAN ?
ABOUT tcp_retrans_collapse This variable implements a bug in the TCP protocol so it will be able to talk to certain other buggy TCP stacks. Without implementing this bug in the TCP stack, we would be unable to talk to certain printers that has this bug built in. This bug makes the TCP stack try to …
free – Display amount of free and used memory in the system
commandline session $free -m -c 10 -s 10 total used free shared buffers cached Mem: 1948 1816 131 0 105 536 -/+ buffers/cache: 1175 773 Swap: 5706 19 5687 total used free shared buffers cached Mem: 1948 1816 131 0 105 536 -/+ buffers/cache: 1175 773 Swap: 5706 19 5687 total used free shared buffers …
Continue reading “free – Display amount of free and used memory in the system”
nc – TCP/IP swiss army knife
Commandline Session $nc -l -p 4444 hello how are you ? Happy Hacking Hey $nc 127.0.0.1 4444 hello how are you ? Happy Hacking Hey Note : shell screenshot edited.
xargs AND cd WITH MORE MANIPULATION
ABOUT xargs xargs is a command on Unix and most Unix-like operating systems used to build and execute commands from standard input. It converts input from standard input into arguments to a command. Some commands such as grep and awk can take input either as command-line arguments or from the standard input. However, others such …
How to make tcpdump output without address to name conversion ?
ABOUT tcpdump tcpdump is a common packet analyzer that runs under the command line. It allows the user to display TCP/IP and other packets being transmitted or received over a network to which the computer is attached.[3] Distributed under the BSD license,[4] tcpdump is free software. Tcpdump works on most Unix-like operating systems: Linux, Solaris, …
Continue reading “How to make tcpdump output without address to name conversion ?”
grep prints the matching lines – First Character ^
$ 4.2.36 7 507—> grep ^S resume.txt Self Study and Consulting. Software Engineer. Sri Ramakrishna Engineering College, 1996-2000 $ 4.2.36 8 508—> grep ^A resume.txt August 2007 to present. Address: 12/214C Papali Road Vazhakkala. Kakkanad West. $ 4.2.36 9 509—> grep ^J resume.txt July 2005 – June 2007 $ 4.2.36 10 510—> grep ^N resume.txt …
Continue reading “grep prints the matching lines – First Character ^”
REGULAR EXPRESSION WITH GREP – DOT
grep searches the named input FILEs (or standard input if no files are named, or if a single hyphen-minus (-) is given as file name) for lines containing a match to the given PATTERN. By default, grep prints the matching lines. commandline session $ cat first.txt name-jeffrin Age-35 Sex-Male $ grep 3. first.txt Age-35 $ …
google chrome HANGUP .BACKTRACE
commandline session (gdb) bt #0 0x00007fd461dbeac3 in *__GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=100) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007fd46643f4d4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fd46643f5f4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fd468940c00 in ?? () #4 0x00007fd468918832 in ?? () #5 0x00007fd4686349ff in ?? () #6 0x00007fd46a2e8811 in ?? () #7 0x00007fd46a2ea31d in ?? () #8 …
pstree command in linux I
Commandline Session $pstree -pA init(1)-+-/usr/sbin/apach(2306)-+-/usr/sbin/apach(4451) | |-/usr/sbin/apach(4452) | |-/usr/sbin/apach(4453) | |-/usr/sbin/apach(4454) | `-/usr/sbin/apach(4455) |-NetworkManager(2145)-+-dhclient(4539) | |-{NetworkManager}(2196) | `-{NetworkManager}(4540) |-accounts-daemon(2233)—{accounts-daemon}(2235) |-at-spi-bus-laun(3756)-+-dbus-daemon(3761) | |-{at-spi-bus-laun}(3758) | |-{at-spi-bus-laun}(3760) | `-{at-spi-bus-laun}(3762) |-at-spi2-registr(3764)—{at-spi2-registr}(37100) |-atd(2334) |-atop(2361) |-avahi-daemon(2372)—avahi-daemon(2373) |-bluetoothd(2399) |-colord(3919)—{colord}(3928) |-colord-sane(3931)-+-{colord-sane}(3935) | `-{colord-sane}(4015) |-console-kit-dae(2237)-+-{console-kit-dae}(2238) | |-{console-kit-dae}(2239) | |-{console-kit-dae}(2240) | |-{console-kit-dae}(2241) | |-{console-kit-dae}(2242) | |-{console-kit-dae}(2243) | |-{console-kit-dae}(2244) | |-{console-kit-dae}(2245) | |-{console-kit-dae}(2246) | |-{console-kit-dae}(2247) | …