Develop Reference

How to get list of currently working commands in Cygwin?

Currently working with the linphone-android integration. I have installed some packages during installation of Cygwin.
When I try some of the commands like ls, rm, cd, wget, tar and etc.. are working fine. But few commands like shell, clean are not working. It gives error command not found.
So, my question is,
Is there any way to get list of working commands for Cygwin?
Is there any way to install packages for these commands rather than installing them manually?

In my opinion the most elegant solution is to use the compgen command:
compgen -c lists all the available commands
compgen -a lists all the available aliases
You can also try a more brute approach:
Get all the paths from cygwin using echo $PATH and then for each folder execute ls -h <folder_name>

For installing a package the best way is to install first the equavalent of apt-get: apt-cyg from https://github.com/transcode-open/apt-cyg and put it in /usr/local/bin:
wget raw.github.com/transcode-open/apt-cyg/master/apt-cyg<br>
chmod +x apt-cyg<br>
mv apt-cyg /usr/local/bin<br>
You can also try running the setup executable used to install cygwin setup.exe -q -n -N -d -R c:\cygwin -s http://mirror_site_to_use -l c:\local_package_folder for a local package or setup.exe -q -P package_name to let the setup download the package

How do I execute a shell file?

I'm trying to download Whatsapp on my laptop. I am using Ubuntu desktop software. I've installed Android Emulator from http://dl.google.com/android/android-sdk_r16-linux.tgz
I unzipped the file, opened the folder, Android-sdk-linux, opened Tools and now I'm supposed to execute the file Android, and I'm not sure how to do that. Can anyone give me any help?
Ok, so this is what I thought I was supposed to do:
shell#shell:~$ cd Desktop
shell#shell:~/Desktop$ ./android.sh
bash: ./android.sh: No such file or directory
but then that happens...

Make the file executable first with
chmod +x filename.sh
Then start the script with
./filename.sh
or
/full/path/to/filename.sh

sh filename.sh
OR
bash filename.sh

Use the following command to install the WhatsApp on Ubuntu:
wget https://www.thefanclub.co.za/sites/all/modules/pubdlcnt/pubdlcnt.php?file=https://www.thefanclub.co.za/sites/default/files/public/downloads/whatsapp-webapp_1.0_all.deb&nid=200 && sudo dpkg -i whatsapp-webapp_1.0_all.deb
Then enter the password and open WhatsApp using the application key.

by default permission for any shell script is "-rw-rw-r--" first we need to change the permissions using the "chmod command" then we can run the shell script in the same way in which we run the C executable code.
To debug the shell script we need to run the shell script with the "bash -x" option as follow : $ bash -x ./

Download and moving .apk with bash

I made a script to clean a ROM and install specific apps but when I look in the folder Mac is not seeing my .apk as unix exec file how can i fix this
here is part of the script:
getapex='curl -s -o ApexLauncher.apk apex.anddoes.com/Download.aspx'
$getapex
mv ApexLauncher.apk $currentdir/system/app/
hope you guys can help....

If it's not seeing the .apk file as a "unix exec file" as you say, then maybe you need to give it execution permission with:
chmod +x ApexLauncher.apk

Cocos2D-x HelloCpp for Android unable to build apk from Windows due to permission denied on asset file

I was trying to run cocos2dx HelloCpp sample project on Android, building from Windows-7 64 bit with Cygwin 64 bit, however, everytime I try to build and run, it complains that permission was denied on "Marker Felt.fnt" file in assets/font folder.
I checked that there's no permission on that file and chmod to give it proper permission, but everytime I try to run again, that file seems to be regenerated and has no permission again...
Does anyone has the same problem? I have been googling and the nearest problem I've found is this:
Cocos2dx Android: Get data from file(assets/*) failed
However, it is quite different. I've tried disabling UAC on my Windows machine, but the problem doesn't go away
Any help is highly appreciated

Check the proj.android/build_native.sh, every time you run the build, the entire assets/* folder will be re-created, and thus, your chmod is nullified.
You can chmod after the copy process itself in the build_native.sh, place the chmod somewhere after cp the assets/*
in my case, put
chmod 777 -R "$APP_ANDROID_ROOT"/assets
after copying the assets folder in build_native.sh like this:
if [ -f "$file" ]; then
cp "$file" "$APP_ANDROID_ROOT"/assets
fi
chmod 777 -R "$APP_ANDROID_ROOT"/assets
done

How to delete folders in sdcard of file explorer?

I created several folders in the sdcard (Eclipse) by running an Android application in the emulator. Now I want to delete the folders which I have created on the sdcard.
I am able to delete files in the folders but I could not delete the folders in the sdcard.
How can I do this? Is there a way to delete folders?

Using adb command you can delete folders.
click Run - > CMD-> type adb shell --> cd sdcard -> rmdir {dirname}
Note : Make sure your dir should be empty.
For non-empty directory use.
click Run - > CMD-> type adb shell --> cd sdcard -> rm -r {dirname}

Well, answer from Brijesh Thakur is really helpful.
I just tried this and it worked fine for me to some extent. I would like to mention that if your directory contains any files then the rmdir command will not work. You will have to use rm -r command for that.
To make it more easy for beginners I am explaining the process as follows.
First you need to locate your adb folder, mine was at D:\Android SDK\platform-tools>
Now execute adb shell in a command prompt as:
D:\Android SDK\platform-tools>adb shell
A hash (#) symbol or dollar sign ($) will appear, then enter the following command:
# cd sdcard
Now you are in the sdcard of the device. If your folder is a sub folder then further locate its parent folder using the cd command. Finally, use the rm -r command to remove the folder recursively as follows. This will delete all files and directories in the folder.
# rm -r FolderName
Please note that if you want to remove a single file you can use the rm command only and then the file name (with extension probably). And you can also use rmdir command if the directory you trying to delete is empty.

Using adb shell with rm command you can delete(nonempty as well as empty) folders.
click Run -- > CMD--> type adb shell --> cd sdcard --> rm -r {dirname}

We can do it in a single command line as under:
adb shell rm -r sdcard/<dirname>

If you want to delete everything in your android file system, you need to get its storage name from adb!
# adb shell echo $EXTERNAL_STORAGE
It will give you the path where everything is stored!It will print the storage name in command line, for few devices it is /sdcard and for few, it is /storage/emulated/legacy etc
Now you want to delete everything in that, you need
# adb shell rm -r /sdcard/
that /sdcard/ is not same for all devices, it could be /storage/emulated/legacy/ for some devices!
warning-: It will delete every folder in your file manager except "android" folder
now if you want to delete a particular folder in that file manager
# adb shell rm -r /sdcard/FolderName

remount the sdcard with read and write permission:
adb shell mount -o remount,rw /
Go to adb shell:
adb shell
Delete file you want:
rm -r /sdcard/file_name
It will work most better.