Formatting text in Adb Shell

Issue

I was doing some adb shell stuff on windows and stuck at a point. Here's what I was doing.. I was printing all installed apps on my phone and getting their exact path.

zeroltetmo:/ # pm list packages -f 
package:/system/app/FilterProvider/FilterProvider.apk=com.samsung.android.provider.filterprovider
package:/system/priv-app/CtsShimPrivPrebuilt/CtsShimPrivPrebuilt.apk=com.android.cts.priv.ctsshim
package:/system/app/YouTube/Youtube.apk=com.google.android.youtube
package:/system/app/vsimservice/vsimservice.apk=com.sec.vsimservice
package:/system/priv-app/WallpaperCropper/WallpaperCropper.apk=com.android.wallpapercropper
package:/system/framework/framework-res.apk=android
package:/system/framework/samsung-framework-res/samsung-framework-res.apk=com.samsung.android.framework.res
package:/data/app/com.whatsapp-1/base.apk=com.whatsapp
package:/data/app/ru.meefik.busybox-2/base.apk=ru.meefik.busybox
package:/data/app/com.google.android.play.games-1/base.apk=com.google.android.play.games

But, I want this to print only system/app directory but only upto folder name instead of the full path. What i'm doing is piping this to grep and using this pattern to get the result.

zeroltetmo:/ # pm list packages -f | grep -o "system/app.*\/"
system/app/FilterProvider/
system/app/RootPA/
system/app/YouTube/
system/app/ClipboardSaveService/
system/app/TetheringAutomation/
system/app/GoogleExtShared/
system/app/WfdBroker/
system/app/vsimservice/
system/app/USBSettings/
system/app/EasyOneHand3/

But the problem is this / at the end of folder name that I'm stuck with.

Solution

You can filter the trailing slashes out with sed like that:

pm list packages -f | grep -o "system/app.*/" | sed 's,/$,,'

Explanation of the sed command:

s stands for substitution

, delimits command name from its arguments - it's easier to use something different / when we want to replace /

/$ - string to be replaced. In this case it means slash at the end of the line

The string to replace /$ with is empty because we want to remove it.

Answered By - Arkadiusz Drabczyk