How to sign an APK on Android (command line) and deal with zip

How to sign an APK on Android (command line) and deal with zip
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# Get details about APK
aapt dump badging SpareParts.apk
unzip -l app.apk
aapt dump permissions app/demo_input.apk

---------------------------------------------Dealing-archive----------------
-Check detailed view zip
unzip -v demo_input.apk

- copy files recursively in zip (./ present working directory)
zip -r demo_input.apk ./

-delete all the sign files (demo at the end)
zip -d my_application.apk META-INF/\*
or
zip -d demo_input.apk "META-INF/*"

# Extract specific file from apk
unzip -l
unzip -j "demo_input.apk" "res/mipmap-xxxhdpi/ic_launcher.png" -d $PWD/saved-dir

- Extract to a relative dir
unzip -j -d relativedir archive.zip path/in/archive/file.ext

- Extract to the current dir
unzip -j -d . archive.zip path/in/archive/file.ext

- Extract to absolute dir
unzip -j -d /absolutedir archive.zip path/in/archive/file.ext

- update file to zip file
zip -u demo_input.apk file.txt

- update file into an existing directory of zip
zip -u demo_input.apk res/fine.txt

-Move file to zlip file
zip -m demo_input.apk file.txt

-Add directory to a zip file
zip -r demo_input.apk directory_path

- Create encrypted file with password
zip -e demo_input.apk .*txt

---------------------------------------------Dealing-archive----------------

# Create key tool
keytool -genkey -v -keystore release.keystore -alias example -keyalg RSA -keysize 2048 -validity 10000

-Sign apk JARSIGNER
jarsigner -verbose -sigalg SHA1withRSA -digestalg ShA1 -keystore release.keystore L3MON.apk example

- zip align apk
 wget http://security.ubuntu.com/ubuntu/pool/universe/a/android-platform-build/zipalign_8.1.0+r23-3ubuntu2_amd64.deb
 zipalign -v 4 new.apk aligned.apk


 # Create cert using openssl
openssl req -x509 -days 9125 -newkey rsa:1024 -nodes -keyout key.pem -out certificate_x509.pem
openssl pkcs8 -topk8 -outform DER -in key.pem -inform PEM -out key.pk8 -nocrypt
apksigner sign --key key.pk8 --cert certificate_x509.pem app/demo_input.apk


# Sign using apksigner
keytool -genkey -v -keystore release.keystore -alias example -keyalg RSA -keysize 2048 -validity 10000
apksigner sign --ks-key-alias example --ks release.keystore app/demo_input.apk
apksigner verify app/demo_input.apk
jarsigner -verify -verbose my_application.apk

# Sign using uber signer
openssl req -x509 -days 9125 -newkey rsa:1024 -nodes -keyout key.pem -out certificate_x509.pem
openssl pkcs8 -topk8 -outform DER -in key.pem -inform PEM -out key.pk8 -nocrypt
java -jar uber.jar certificate.pem key.pk8 app/demo_input.apk path-of-the-new-signed-apk.apk

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