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Inability to scan if wlan0 is not up #4

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Inability to scan if wlan0 is not up #4

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rockymeza
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In order to be able to scan. I need to run wifi connect home. It does not matter if the network actually connected, but the interface needs to be up before I can scan.

@rockymeza
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rocky@rossum:~$ sudo wifi scan
wlan0     Interface doesn't support scanning : Network is down

Traceback (most recent call last):
  File "/usr/local/bin/wifi", line 7, in <module>
    execfile(__file__)
  File "/home/rocky/projects/wifi/bin/wifi", line 95, in <module>
    args.func(args)
  File "/home/rocky/projects/wifi/bin/wifi", line 10, in scan_command
    cells = iwlist()
  File "/home/rocky/projects/wifi/wifi/__init__.py", line 25, in iwlist
    scan = subprocess.check_output(['/sbin/iwlist', 'wlan0', 'scan'])
  File "/usr/lib/python2.7/subprocess.py", line 544, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['/sbin/iwlist', 'wlan0', 'scan']' returned non-zero exit status 255

@rockymeza
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I fixed this error by turning on the interface using ip link set dev wlan0 up, which lets you scan, but doesn't try to connect to a network.

@gavinwahl, can you test it out?

Erf- added a commit to Erf-/wifi that referenced this pull request Jul 31, 2015
@Erf-
Pull request fix rockymeza#4.
7ccdafd
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix rockymeza#4.
a663fa7 
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix rockymeza#4.
78b8938 
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix rockymeza#4.
482a825 
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix rockymeza#4.
7579355 
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix rockymeza#4.
1c2775b 
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix #1.
b9e3320 
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve some build issues (still least).
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix #1.
f70cac7 
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve some build issues (still least).
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Pull request fix #1.
e825593 
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve build issues.
Erf- pushed a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@foosel @Erf-
Adding sudo args.
d687da2 
Test scan.
 Modifications qui seront validées :
	nouveau fichier: tests/test_scan.py
	nouveau fichier: wifi/dummydata.py
	modifié:         wifi/scan.py

Realisation du test du listing de reseaux disponibles en utilisant l'argument
'sudo'.

Le fichier dummydata contient les variables qui seront utilisees dans les
tests, a l'instar des fixtures de pytest.

Le fichier scan contient les modifications apportees par Yohan.

Add sudo args to terminal calls.
	modified :         tests/test_parsing.py
	modified :         tests/test_scan.py
	modified :         tests/test_schemes.py
	removed :        wifi/dummydata.py
	modified :         wifi/scheme.py

Pull request fix #1.
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve build issues.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Adding 'sudo' args.
d1d423f 
Le fichier dummydata contient les variables qui seront utilisees dans les
tests, a l'instar des fixtures de pytest.

Le fichier scan contient les modifications apportees par Yohan.

Add sudo args to terminal calls.
	modified :         tests/test_parsing.py
	modified :         tests/test_scan.py
	modified :         tests/test_schemes.py
	removed :        wifi/dummydata.py
	modified :         wifi/scheme.py

Pull request fix #1.
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve build issues.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Adding 'sudo' args.
973de9b 
Add sudo args to terminal calls.
	modified :         tests/test_parsing.py
	modified :         tests/test_scan.py
	modified :         tests/test_schemes.py
	removed :        wifi/dummydata.py
	modified :         wifi/scheme.py

Pull request fix #1.
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve build issues.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 3, 2015
@Erf-
Adding 'sudo' args.
fc2bc29 
Add sudo args to terminal calls.
	modified :         tests/test_parsing.py
	modified :         tests/test_scan.py
	modified :         tests/test_schemes.py
	removed :        wifi/dummydata.py
	modified :         wifi/scheme.py

Pull request fix #1.
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve build issues.
Erf- added a commit to Erf-/wifi that referenced this pull request Aug 4, 2015
@Erf-
Adding 'sudo' args.
4c84e9c 
Add sudo args to terminal calls.
	modified :         tests/test_parsing.py
	modified :         tests/test_scan.py
	modified :         tests/test_schemes.py
	removed :        wifi/dummydata.py
	modified :         wifi/scheme.py

Pull request fix #1.
	modifié :         tests/test_scan.py
	modifié :         tests/test_schemes.py

Pull request fix #2.
	modifié:         tests/test_scan.py
	modifié:         tests/test_schemes.py

Pull request fix rockymeza#3.
	modifié:         setup.py
Add 'mock' to the requires.

Pull request fix rockymeza#4.
	modifié:         .travis.yml
Demand for latest update of setuptools when installing.

Pull request fix rockymeza#5.
Improve code readability.

Add Travis to my own repository.

Restore file permissions.

Pull request fixes rebase.

Rebase of the pull request fixes in order to clear the code and to solve build issues.
@ismailof ismailof mentioned this pull request Jan 2, 2017
Merged
@rockymeza rockymeza closed this Sep 18, 2019
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@rockymeza