android - Find out the running process ID by package name -

i working on script in need supply pid of application. able list processes pids following command , see entry of application.

adb shell ps

this gives me huge list of processes. , need single entry (which can further supply command), want filter results package name. grep command not work on windows machine. tried following command didn't help.

adb shell ps name:my_app_package

since android 7.0 easiest way find out process id package name use pidof command:

usage: pidof [-s] [-o omitpid[,omitpid...]] [name]...  print pids of processes given names.  -s      single shot, return 1 pid. -o      omit pid(s) 

just run this:

adb shell pidof my.app.package 

in android before 7.0 people used ps command , parsed output using either built-in filter comm value (which android apps last 15 characters of package name) or grep command. comm filter did not work if last 15 characters of name started digit , grep not included default until android 4.2. after proper process line found pid value still needed extracted.

there multiple ways that. here how finding process , extracting pid done single sed command:

adb shell "ps | sed -n 's/^[^ ]* *\([0-9]*\).* my\.app\.package$/\1/p'" 

again problem sed was not included default until android 6.0.

but if must use older device can use following android version independent solution. not use external commands - android shell built-ins:

adb shell "for p in /proc/[0-9]*; [[ $(<$p/cmdline) = my.app.package ]] && echo ${p##*/}; done" 

the popular reason looking pid use in other command kill. let's have multiple instances of logcat running , want finish them gracefully @ once. replace echo kill -2 in last command:

adb shell "for p in /proc/[0-9]*; [[ $(<$p/cmdline) = logcat ]] && kill -2 ${p##*/}; done" 

replace " ' if running commands linux/osx shell.