How to get installation log (either from adb install or manual install)

The question is what to grep/filter?

adb logcat | grep what?

adb install file.apk

tried with grep apk and manual install, but it contains no useful information:

01-25 17:29:05.721  4241  6322 I ActivityManager: START u0 {
dat=file:///data/user_de/0/com.google.android.packageinstaller/no_backup/package7763548981090696460.apk flg=0x2000000 cmp=com.google.android.packageinstaller/com.android.packageinstaller.InstallInstalling (has extras)
}
 from uid 10020, pid 24521

01-25 17:29:08.660  4241  5058 I ActivityManager: START u0 {
dat=file:///data/user_de/0/com.google.android.packageinstaller/no_backup/package7763548981090696460.apk flg=0x2000000 cmp=com.google.android.packageinstaller/com.android.packageinstaller.InstallFailed (has extras)
}
 from uid 10020, pid 24521

tried with grep apk and adb install nothing captured (stuck), how can i know what part causes the installation failure?