Bài TH1 CT178 Nguyên lý hệ điều hành

Bài 1
In [17]:
%%bash
cd /usr/local/bin
echo $PATH
pwd
ls -1
/opt/bin:/usr/local/nvidia/bin:/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sb
in:/usr/bin:/sbin:/bin:/tools/node/bin:/tools/google-cloud-sdk/bin
/usr/local/bin
bokeh
censusgeocode
chardetect
cmake
colab-fileshim.py
colorcet
community
convert-caffe2-to-onnx
convert-onnx-to-caffe2
coverage
coverage3
coverage-3.7
coveralls
cpack
ctest
cygdb
cython
cythonize
dap_multiplexer
dask-mpi
dask-remote

dask-scheduler
dask-ssh
dask-submit
dask-worker
doesitcache
earthengine
easy_install
easy_install-2.7
estimator_ckpt_converter
f2py
f2py3
f2py3.7
fits2bitmap
fitscheck
fitsdiff
fitsheader
fitsinfo
flask
futurize
gdown
get_objgraph
google
google-oauthlib-tool
holoviews
hyperopt-mongo-worker
imageio_download_bin
imageio_remove_bin
import_pb_to_tensorboard
install_cmdstan
install_cxx_toolchain

iptest
iptest3
ipython
ipython3
isympy


isympy
jsonschema
jupyter
jupyter-bundlerextension
jupyter-console
jupyter-execute
jupyter-kernel
jupyter-kernelspec
jupyter-migrate
jupyter-nbconvert
jupyter-nbextension
jupyter-notebook
jupyter-qtconsole
jupyter-run
jupyter-serverextension
jupyter-troubleshoot
jupyter-trust
kaggle
lsm2bin
lunar-find
make_image_classifier
make_nearest_neighbour_index
markdown_py

natsort
nc3tonc4
nc4tonc3
ncinfo
nib-dicomfs
nib-diff
nib-ls
nib-nifti-dx
nib-tck2trk
nib-trk2tck
normalizer
nsight-sys
nsys
nsys-ui
numba
panel
parrec2nii
pasteurize
pip
pip2
pip2.7
pip3
pip3.7
pip-compile
pip-sync
plac_runner.py
plasma_store
portserver.py
pt2to3
ptdump

ptrepack
pttree
pybabel
__pycache__
pycc
pyct
pygmentize
pyrsa-decrypt
pyrsa-encrypt
pyrsa-keygen
pyrsa-priv2pub
pyrsa-sign
pyrsa-verify
pysemver
pytest
py.test
python
R
range-detector
rst2html4.py


rst2html4.py
rst2html5.py
rst2html.py
rst2latex.py
rst2man.py
rst2odt_prepstyles.py
rst2odt.py
rst2pseudoxml.py

rst2s5.py
rst2xetex.py
rst2xml.py
rstpep2html.py
runxlrd.py
samp_hub
sample
saved_model_cli
send2trash
showtable
skivi
spacy
sphinx-apidoc
sphinx-autogen
sphinx-build
sphinx-quickstart
sqlformat
tabulate
tensorboard
test-importability.py
tfds
tflite_convert
tf_upgrade_v2
theano-cache
tiff2fsspec
tiffcomment
tifffile
toco
toco_from_protos
torchrun

tqdm
undill
volint
wcslint
wheel
wordcloud_cli
Bài 2
In [5]:
%%bash
cd /
pwd
cd /bin
pwd
cd /usr/local/bin
pwd
cd ..
pwd
cd ~
pwd
/
/bin
/usr/local/bin
/usr/local
/root
Bài 3
In [6]:


%%bash
cd /usr

pwd
echo "echo 'Xin chao!!!'" >hello
chmod 755 hello
pwd
sh hello
cd ~
sh hello
/usr
/usr
Xin chao!!!
sh: 0: Can't open hello
Bài 4
In [7]:
%%bash
sh /usr/hello
Xin chao!!!
Bài 5
In [16]:
%%bash
echo $PATH
PATH=$PATH:/usr:
echo $PATH
cd hello
/opt/bin:/usr/local/nvidia/bin:/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sb
in:/usr/bin:/sbin:/bin:/tools/node/bin:/tools/google-cloud-sdk/bin
/opt/bin:/usr/local/nvidia/bin:/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sb
in:/usr/bin:/sbin:/bin:/tools/node/bin:/tools/google-cloud-sdk/bin:/usr
bash: line 4: cd: hello: No such file or directory
Bài 6
In [11]:

%%bash
ls -l /usr/local/bin
ls -l /
total 8364
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1
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1
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root
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root
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root
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root
221 Mar
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221 Mar
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206 Mar
root
4285 Jan
root
216 Mar
root
875 Mar
root
252 Mar
root
252 Mar
root
207 Mar
root
207 Mar
root

207 Mar
root
212 Mar
root
206 Mar
root
206 Mar
root
220 Mar
root
241 Mar
root
221 Mar
root 7845293 Jan
root
219 Mar

23
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14:31
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2000
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14:30
14:23
14:23
14:23
14:23
14:34
14:34
14:23
14:23
14:23
2000
14:34

bokeh

censusgeocode
chardetect
cmake
colab-fileshim.py
colorcet
community
convert-caffe2-to-onnx
convert-onnx-to-caffe2
coverage
coverage3
coverage-3.7
coveralls
cpack
ctest
cygdb
cython
cythonize
dap_multiplexer
dask-mpi


-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
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lrwxrwxrwx
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lrwxrwxrwx

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5501
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261
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209
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271
277
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244
28
22
25

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14:34

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14:31
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14:31
14:31
14:32
14:32
14:32
14:32
14:32
14:32
14:23
14:10
14:10
14:10

dask-mpi
dask-remote
dask-scheduler
dask-ssh
dask-submit
dask-worker
doesitcache
earthengine
easy_install
easy_install-2.7
estimator_ckpt_converter
f2py
f2py3
f2py3.7
fits2bitmap
fitscheck
fitsdiff

fitsheader
fitsinfo
flask
futurize
gdown
get_objgraph
google
google-oauthlib-tool
holoviews
hyperopt-mongo-worker
imageio_download_bin
imageio_remove_bin
import_pb_to_tensorboard
install_cmdstan
install_cxx_toolchain
iptest
iptest3
ipython
ipython3
isympy
jsonschema
jupyter
jupyter-bundlerextension
jupyter-console
jupyter-execute
jupyter-kernel
jupyter-kernelspec
jupyter-migrate
jupyter-nbconvert
jupyter-nbextension

jupyter-notebook
jupyter-qtconsole
jupyter-run
jupyter-serverextension
jupyter-troubleshoot
jupyter-trust
kaggle
lsm2bin
lunar-find
make_image_classifier
make_nearest_neighbour_index
markdown_py
natsort
nc3tonc4
nc4tonc3
ncinfo
nib-dicomfs
nib-diff
nib-ls
nib-nifti-dx
nib-tck2trk
nib-trk2tck
normalizer
nsight-sys -> /etc/alternatives/nsight-sys
nsys -> /etc/alternatives/nsys
nsys-ui -> /etc/alternatives/nsys-ui


lrwxrwxrwx
-rwxr-xr-x

-rwxr-xr-x
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1
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1

root
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root
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root
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root

25
188
212
225
217
1374

217
217
221
221
221
218
2379
248
13334
220
220
222
220
222
4096
54
212
215
212
212
210
233
206
210
205
205
205
1374
377
2855

714
1082
594
791
599
1726
764
601
637
871
602
670
16253
234
205
238
218
230
220
32
216
230
215
220
216
209
223
3991
247
236

248
215
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219
207
236
243

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1
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1
23
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23
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14:10
14:30
14:31
14:32
14:30
2000
14:18
14:18
14:17
14:17
14:32
14:32
14:29
14:31
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14:29
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2000
2000
14:32
14:23
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14:31
14:31
14:23
14:23
14:23
14:23
14:31
14:32
14:31
2000
14:32
14:31
14:31
14:31
14:23
14:23
14:23
14:31
14:31

nsys-ui -> /etc/alternatives/nsys-ui
numba
panel
parrec2nii
pasteurize
pip
pip2
pip2.7
pip3
pip3.7

pip-compile
pip-sync
plac_runner.py
plasma_store
portserver.py
pt2to3
ptdump
ptrepack
pttree
pybabel
__pycache__
pycc
pyct
pygmentize
pyrsa-decrypt
pyrsa-encrypt
pyrsa-keygen
pyrsa-priv2pub
pyrsa-sign
pyrsa-verify
pysemver
pytest
py.test
python
R
range-detector
rst2html4.py
rst2html5.py
rst2html.py
rst2latex.py

rst2man.py
rst2odt_prepstyles.py
rst2odt.py
rst2pseudoxml.py
rst2s5.py
rst2xetex.py
rst2xml.py
rstpep2html.py
runxlrd.py
samp_hub
sample
saved_model_cli
send2trash
showtable
skivi
spacy
sphinx-apidoc
sphinx-autogen
sphinx-build
sphinx-quickstart
sqlformat
tabulate
tensorboard
test-importability.py
tfds
tflite_convert
tf_upgrade_v2
theano-cache
tiff2fsspec
tiffcomment

tifffile
toco
toco_from_protos


-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
-rwxr-xr-x
total 96
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x
dr-xr-xr-x
drwxr-xr-x
drwx-----drwxr-xr-x

drwxr-xr-x
drwxr-xr-x
dr-xr-xr-x
drwxr-xr-x
drwxrwxrwt
drwxr-xr-x
drwxr-xr-x
drwxr-xr-x

1
1
1
1
1
1
1
1

root
root
root
root
root
root
root
root

1
2
1

1
5
1
2
1
2
1
2
2
1
169
14
1
1
1
2
12
3
1
1
1
1

root
root
root
root
root
root
root

root

root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root

root
root

root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root
root

243
220
207
587
224
218

208
217
4096
4096
4096
4096
360
4096
4096
4096
4096
4096
4096
4096
4096
0
4096
4096
4096
4096
4096
0
4096
4096
4096
4096
4096

Mar
Mar

Mar
Mar
Mar
Mar
Mar
Mar
Mar
Apr
Mar
Mar
Apr
Apr
Apr
Mar
Mar
Mar
Nov
Nov
Mar
Apr
Mar
Apr
Mar
Apr
Nov
Apr
Mar
Apr
Mar
Apr

Apr

23
23
23
23
23
23
23
23
23
24
23
28
1
1
24
23
23
23
19
19
23
1
23
1
23
1
19
1

23
1
28
1
1

Bài 7
In [10]:
%%bash
# apt install file
cd /usr
ls
file hello
less hello
bin
games
grte
hello
include
lib
lib32
local
sbin
share
src
echo 'Xin chao!!!'
bash: line 4: file: command not found
Bài 8
In [24]:
%%bash

apt install tree
cd /root/
mkdir Myweb
cd ./Myweb
mkdir images databases scripts java

14:31
14:30
14:29
14:31
14:34
14:34
14:18
14:31
14:11
2018
14:22
13:12
07:15
07:15
2018
14:13
14:00
14:00
2020
2020
14:14
07:15
14:14
07:15

14:03
07:15
2020
07:15
14:36
07:16
13:12
07:20
07:15

toco_from_protos
torchrun
tqdm
undill
volint
wcslint
wheel
wordcloud_cli
bin
boot
content
datalab
dev
etc
home
lib
lib32
lib64
media
mnt

opt
proc
python-apt
root
run
sbin
srv
sys
tensorflow-1.15.2
tmp
tools
usr
var


cd ./images
mkdir icon background animation
tree /root/Myweb
Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
tree
0 upgraded, 1 newly installed, 0 to remove and 39 not upgraded.
Need to get 40.7 kB of archives.
After this operation, 105 kB of additional disk space will be used.
Get:1 bionic/universe amd64 tree amd64 1.7.0-5 [40.7 kB]
Fetched 40.7 kB in 1s (64.3 kB/s)
Selecting previously unselected package tree.
(Reading database ... 156210 files and directories currently installed.)

Preparing to unpack .../tree_1.7.0-5_amd64.deb ...
Unpacking tree (1.7.0-5) ...
Setting up tree (1.7.0-5) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
/root/Myweb
├── databases
├── images
│
├── animation
│
├── background
│
└── icon
├── java
└── scripts
7 directories, 0 files
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

Bài 9
In [25]:
%%bash
cd /tools/google-cloud-sdk/platform/gsutil_py2/third_party/httplib2/doc/html
pwd
# find -name "*.html"
# cp genindex.html index.html /root/Myweb/
cd /
find -name "*.class"
cd /usr/share/R/share/java/
pwd
cp getsp.class /root/Myweb/scripts

tree /root/Myweb
/tools/google-cloud-sdk/platform/gsutil_py2/third_party/httplib2/doc/html
./usr/share/R/share/java/getsp.class
/usr/share/R/share/java
/root/Myweb
├── databases
├── images
│
├── animation
│
├── background
│
└── icon
├── java
└── scripts
└── getsp.class
7 directories, 1 file
find: ‘./proc/28/task/28/net’: Invalid argument
find: ‘./proc/28/net’: Invalid argument
Bài 10
In [26]:


In [26]:
%%bash
cd /root/Myweb/scripts/
mv getsp.class /root/Myweb/java/
tree /root/Myweb
/root/Myweb
├── databases

├── images
│
├── animation
│
├── background
│
└── icon
├── java
│
└── getsp.class
└── scripts
7 directories, 1 file
Bài 11
In [29]:
%%bash
rm -r /root/Myweb/scripts /root/Myweb/images/animation/
tree /root/Myweb
/root/Myweb
├── databases
├── images
│
├── background
│
└── icon
└── java
└── getsp.class
5 directories, 1 file
rm: cannot remove '/root/Myweb/scripts': No such file or directory
rm: cannot remove '/root/Myweb/images/animation/': No such file or directory
Bài 12

In [31]:
%%bash
ls -l /root/Myweb/
cd /root/Myweb/
chmod 700 databases
ls -l /root/Myweb/
total 12
drwx-----drwxr-xr-x
drwxr-xr-x
total 12
drwx-----drwxr-xr-x
drwxr-xr-x

2 root root 4096 Apr
4 root root 4096 Apr
2 root root 4096 Apr

1 07:30 databases
1 07:30 images
1 07:30 java

2 root root 4096 Apr
4 root root 4096 Apr
2 root root 4096 Apr

1 07:30 databases
1 07:30 images
1 07:30 java

Bài 13

In [32]:
%%bash
ls -l /root/Myweb/
cd /root/Myweb/
chmod 711 java
ls -l /root/Myweb/
total 12
drwx------ 2 root root 4096 Apr
drwxr-xr-x 4 root root 4096 Apr

1 07:30 databases
1 07:30 images


drwxr-xr-x
drwxr-xr-x
total 12
drwx-----drwxr-xr-x
drwx--x--x

4 root root 4096 Apr
2 root root 4096 Apr

1 07:30 images
1 07:30 java

2 root root 4096 Apr
4 root root 4096 Apr
2 root root 4096 Apr

1 07:30 databases
1 07:30 images
1 07:30 java

Bài 14
-Được sử dụng để thay đổi quyền truy xuất của file hello: Chủ sở hữu có tồn quyền, nhóm sở hữu và người
dùng khác chỉ có quyền đọc và thực thi, khơng có quyền ghi.