Error: Virtualbox guest additions: modprobe vboxsf failed

shared folder Error: Virtualbox guest additions: modprobe vboxsf failed

$ sudo apt-get install virtualbox-guest-dkms

$ sudo apt-get install linux-headers-virtual

#Example #Error #Virtualbox #linux

linux "ps" command example

"ps" command example

: If i use "ps" command, I can check working process.

$ ps [-option]

-a : enumerates all processes (total user)

-u : each process of user and usage time

-x: enumerates all processes without a controlling terminal

-l : enumerates the detailed information

-e: Display all processes statuses

Example)
 ps -aux

PID : process id

%CPU : cpu usage

%MEM : memory usage
VSZ : virtual memory usage

RSS : real memory usage

Stat : process status ( S : sleep, I : idle, T : stop, …)

Linux : search content (in file) / and search file or folder example

search content
$ grep -r "content" ./*

  ex) grep -r "LD_PRELOAD" ./*

search file or folder

$ find ./* -name "file or folder"
  ex) find ./* -name "library" or find ./* -name "*lib*"

android pdk make error : Android can only be built by versions 3.81 and 3.82.

This error is caused by an incorrect "make" version.

root@kiwon-VirtualBox:~/pdk/android-4.4.2_r1# make

build/core/main.mk:45: ********************************************************************************

build/core/main.mk:46: *  You are using version 4.1 of make.

build/core/main.mk:47: *  Android can only be built by versions 3.81 and 3.82.

build/core/main.mk:48: *  see https://source.android.com/source/download.html

build/core/main.mk:49: ********************************************************************************

build/core/main.mk:50: *** stopping.  Stop.

This error is caused by an incorrect "make" version.

So, Please add "make" version.

$make -v

GNU Make 4.1
.…

Please add "make" version 4.1 .

$ vi ./build/core/main.mk

 40 # Check for broken versions of make.

 41 # (Allow any version under Cygwin since we don't actually build the platform there.)

 42 ifeq (,$(findstring CYGWIN,$(shell uname -sm)))

 43 ifeq (0,$(shell expr $$(echo $(MAKE_VERSION) | sed "s/[^0-9\.].*//") = 3.81))

 44 ifeq (0,$(shell expr $$(echo $(MAKE_VERSION) | sed "s/[^0-9\.].*//") = 3.82))

 45 ifeq (0,$(shell expr $$(echo $(MAKE_VERSION) | sed "s/[^0-9\.].*//") = 4.1))

 46 $(warning ********************************************************************************)

 47 $(warning *  You are using version $(MAKE_VERSION) of make.)

 48 $(warning *  Android can only be built by versions 3.81 and 3.82.)

 49 $(warning *  see https://source.android.com/source/download.html)

 50 $(warning ********************************************************************************)

 51 $(error stopping)

 52 endif

 53 endif

 54 endif

 55 endif

Okay .