구차니의 잡동사니 모음

$ tty

/dev/pts/1

$ screen

$ tty

/dev/pts/6

ctrl-a,c

$ tty

/dev/pts/7

ctrl-a,n

window change

ctrl-a,d detach

[detached from 4014.pts-1.odroid_1]

// detach 시에는 다른 창을 만들어 두었더라도 전부 같이 떨어진다.

$ ps -ef | grep -i screen

odroid    4014     1  0 11:49 ?        00:00:00 SCREEN

$ screen -r

reattach

                       Screen key bindings, page 1 of 2.

                       Command key:  ^A   Literal ^A:  a

  break       ^B b         license     ,            removebuf   =

  clear       C            lockscreen  ^X x         reset       Z

  colon       :            log         H            screen      ^C c

  copy        ^[ [         login       L            select      '

  detach      ^D d         meta        a            silence     _

  digraph     ^V           monitor     M            split       S

  displays    *            next        ^@ ^N sp n   suspend     ^Z z

  dumptermcap .            number      N            time        ^T t

  fit         F            only        Q            title       A

  flow        ^F f         other       ^A           vbell       ^G

  focus       ^I           pow_break   B            version     v

  hardcopy    h            pow_detach  D            width       W

  help        ?            prev        ^H ^P p ^?   windows     ^W w

  history     { }          quit        \            wrap        ^R r

  info        i            readbuf     <            writebuf    >

  kill        K k          redisplay   ^L l         xoff        ^S s

  lastmsg     ^M m         remove      X            xon         ^Q q

                  [Press Space for next page; Return to end.]

                       Screen key bindings, page 2 of 2.

^]   paste .

"    windowlist -b

-    select -

0    select 0

1    select 1

2    select 2

3    select 3

4    select 4

5    select 5

6    select 6

7    select 7

8    select 8

9    select 9

I    login on

O    login off

]    paste .

|    split -v

:kB: focus prev

                        [Press Space or Return to end.]  

$ ps -ef | grep -i screen

odroid    4014     1  0 11:49 ?        00:00:00 SCREEN

odroid   17153  1554  0 11:57 pts/1    00:00:00 screen -r 

$ screen -r

There is a screen on:

        4014.pts-1.odroid_1     (22/10/16 11:49:14)     (Attached)

There is no screen to be resumed. 

$ screen -r

There are several suitable screens on:

        24631.pts-12.odroid_1   (22/10/16 12:02:24)     (Detached)

        4014.pts-1.odroid_1     (22/10/16 11:49:13)     (Detached)

Type "screen [-d] -r [pid.]tty.host" to resume one of them. 

$ ps -ef | grep -i screen

odroid    4014     1  0 11:49 ?        00:00:00 SCREEN

odroid   24631     1  0 12:02 ?        00:00:00 SCREEN

Host Specifications

A "host list" tells distcc which machines to use for compilation. In order, distcc looks in the $DISTCC_HOSTS environment variable, the user's $DISTCC_DIR/hosts file, and the system-wide host file. If no host list can be found, distcc emits a warning and compiles locally.

The host list is a simple whitespace separated list of host specifications. The simplest and most common form is a host names, such as

localhost red green blue

distcc prefers hosts towards the start of the list, so machines should be listed in descending order of speed. In particular, when only a single compilation can be run (such as from a configure script), the first machine listed is used (but see --randomize below). 

--randomize

Randomize the order of the host list before execution.

$ cat /etc/distcc/hosts

# As described in the distcc manpage, this file can be used for a global

# list of available distcc hosts.

#

# The list from this file will only be used, if neither the

# environment variable DISTCC_HOSTS, nor the file $HOME/.distcc/hosts

# contains a valid list of hosts.

#

# Add a list of hostnames in one line, seperated by spaces, here.

#+zeroconf

odroid_1,cpp,lzo

odroid_2,cpp,lzo

raspberrypi,cpp,lzo 

$ make -j12 CC=distcc

distcc[7640] Warning: INCLUDE_SERVER_PORT not set - did you forget to run under 'distcc-pump'?

distcc[7640] (dcc_build_somewhere) Warning: failed to get includes from include server, preprocessing locally 

$ distcc-pump --startup

export INCLUDE_SERVER_PID='7700'

export INCLUDE_SERVER_DIR='/tmp/distcc-pump.fyGaPI'

export INCLUDE_SERVER_PORT='/tmp/distcc-pump.fyGaPI/socket'

export PATH='/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games'

$ distcc-pump make -j12 CC="distcc gcc -std=gnu99"

__________Using distcc-pump from /usr/bin

__________Using 3 distcc servers in pump mode

  CHK     include/linux/version.h

  CHK     include/generated/kernelversion.h

  HOSTCC  scripts/basic/fixdep

...

  LD      arch/arm/vfp/vfp.o

  LD      arch/arm/vfp/built-in.o

__________Warning: 1 pump-mode compilation(s) failed on server, but succeeded locally.

__________Distcc-pump was demoted to plain mode.  See the Distcc Discrepancy Symptoms section in the include_server(1) man page.

__________Shutting down distcc-pump include server

$ distcc-pump --help

Usage:

    pump COMMAND [ARG...]

or

    pump --startup

    pump --shutdown 

$ vi /etc/init.d/distcc

 55 # construct access list

 56 ALLOW=""

 57 for net in $ALLOWEDNETS

 58 do

 59         ALLOW="$ALLOW --allow $net"

 60 done 

 66 if test -n "$LISTENER"; then

 67         DAEMON_ARGS="$DAEMON_ARGS --listen $LISTENER"

 68 fi

$ cat /etc/default/distcc

ALLOWEDNETS=$(printf "%s/24" $(hostname -I))

LISTENER="$(hostname -I)" 

$ cat /etc/distcc/hosts

# As described in the distcc manpage, this file can be used for a global

# list of available distcc hosts.

#

# The list from this file will only be used, if neither the

# environment variable DISTCC_HOSTS, nor the file $HOME/.distcc/hosts

# contains a valid list of hosts.

#

# Add a list of hostnames in one line, seperated by spaces, here.

#+zeroconf

odroid_1,cpp,lzo

odroid_2,cpp,lzo

raspberrypi,cpp,lzo 

$ distcc --show-hosts

odroid_1,cpp,lzo

odroid_2,cpp,lzo

raspberrypi,cpp,lzo 

$ distcc --show-hosts

distcc[6919] (dcc_get_protover_from_features) ERROR: pump mode (',cpp') requires compression (',lzo')

distcc[6919] (dcc_parse_options) ERROR: invalid host options: ,cpp

odroid_2,cpp

raspberrypi,cpp 

distcc[3645] Warning: INCLUDE_SERVER_PORT not set - did you forget to run under 'distcc-pump'?

distcc[3645] (dcc_build_somewhere) Warning: failed to get includes from include server, preprocessing locally 

distcc[4515] ERROR: nonblocking connect to 192.168.219.139:3632 failed: Connection refused 

+zeroconf

This option is only available if distcc was compiled with Avahi support enabled at configure time. When this special entry is present in the hosts list, distcc will use Avahi Zeroconf DNS Service Discovery (DNS-SD) to locate any available distccd servers on the local network. This avoids the need to explicitly list the host names or IP addresses of the distcc server machines. The distccd servers must have been started with the "--zeroconf" option to distccd. An important caveat is that in the current implementation, pump mode (",cpp") and compression (",lzo") will never be used for hosts located via zeroconf. 

$ distcc -v

Using built-in specs.

COLLECT_GCC=/usr/bin/gcc-4.8.real

COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.8/lto-wrapper

Target: arm-linux-gnueabihf

Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.3' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --enable-multilib --disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb --disable-werror --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf

Thread model: posix

gcc version 4.8.4 (Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.3) 

$ distcc -v

Using built-in specs.

COLLECT_GCC=cc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.9/lto-wrapper

Target: arm-linux-gnueabihf

Configured with: ../src/configure -v --with-pkgversion='Raspbian 4.9.2-10' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf

Thread model: posix

gcc version 4.9.2 (Raspbian 4.9.2-10) 

$ORIGIN example.com.     ; designates the start of this zone file in the namespace

$TTL 1h                  ; default expiration time of all resource records without their own TTL value

example.com.  IN  SOA   ns.example.com. username.example.com. ( 2007120710 1d 2h 4w 1h )

example.com.  IN  NS    ns                    ; ns.example.com is a nameserver for example.com

example.com.  IN  NS    ns.somewhere.example. ; ns.somewhere.example is a backup nameserver for example.com

example.com.  IN  MX    10 mail.example.com.  ; mail.example.com is the mailserver for example.com

@             IN  MX    20 mail2.example.com. ; equivalent to above line, "@" represents zone origin

@             IN  MX    50 mail3              ; equivalent to above line, but using a relative host name

example.com.  IN  A     192.0.2.1             ; IPv4 address for example.com

              IN  AAAA  2001:db8:10::1        ; IPv6 address for example.com

ns            IN  A     192.0.2.2             ; IPv4 address for ns.example.com

              IN  AAAA  2001:db8:10::2        ; IPv6 address for ns.example.com

www           IN  CNAME example.com.          ; www.example.com is an alias for example.com

wwwtest       IN  CNAME www                   ; wwwtest.example.com is another alias for www.example.com

mail          IN  A     192.0.2.3             ; IPv4 address for mail.example.com

mail2         IN  A     192.0.2.4             ; IPv4 address for mail2.example.com

mail3         IN  A     192.0.2.5             ; IPv4 address for mail3.example.com 

$ sudo apt-get install bind9 

$ ll /etc/bind

합계 56

-rw-r--r-- 1 root root 2389  9월 28 08:35 bind.keys

-rw-r--r-- 1 root root  237  9월 28 08:35 db.0

-rw-r--r-- 1 root root  271  9월 28 08:35 db.127

-rw-r--r-- 1 root root  237  9월 28 08:35 db.255

-rw-r--r-- 1 root root  353  9월 28 08:35 db.empty

-rw-r--r-- 1 root root  270  9월 28 08:35 db.local

-rw-r--r-- 1 root bind  275 10월 17 18:25 db.minimonk.net

-rw-r--r-- 1 root root 3048  9월 28 08:35 db.root

-rw-r--r-- 1 root bind  463  9월 28 08:35 named.conf

-rw-r--r-- 1 root bind  567 10월 17 18:24 named.conf.default-zones

-rw-r--r-- 1 root bind  165  9월 28 08:35 named.conf.local

-rw-r--r-- 1 root bind  890 10월 17 17:58 named.conf.options

-rw-r----- 1 bind bind   77 10월 17 17:58 rndc.key

-rw-r--r-- 1 root root 1317  9월 28 08:35 zones.rfc1918 

$ cat named.conf.default-zones

// prime the server with knowledge of the root servers

zone "." {

        type hint;

        file "/etc/bind/db.root";

};

// be authoritative for the localhost forward and reverse zones, and for

// broadcast zones as per RFC 1912

zone "localhost" {

        type master;

        file "/etc/bind/db.local";

};

zone "127.in-addr.arpa" {

        type master;

        file "/etc/bind/db.127";

};

zone "minimonk.net" IN {

        type master;

        file "/etc/bind/db.minimonk.net";

};

zone "0.in-addr.arpa" {

        type master;

        file "/etc/bind/db.0";

};

zone "255.in-addr.arpa" {

        type master;

        file "/etc/bind/db.255";

}; 

$ cat db.netcam4u.net

;

; BIND reverse data file for local loopback interface

;

$TTL    604800

@       IN      SOA     minimonk.net. root.minimonk.net. (

                              1         ; Serial

                         604800         ; Refresh

                          86400         ; Retry

                        2419200         ; Expire

                         604800 )       ; Negative Cache TTL

;

@       IN      NS      ns.minimonk.

        IN      A       192.168.10.13 

$ sudo service bind9 restart 

$ sudo service bind9 reload 

$ nslookup "조회할 도메인" "dns 서버" 

$ sudo apt-get install dnsutils