In the Shell | Usage

| The operator pipe symbol is a very powerful feature of UNIX, and the symbol is a vertical bar: "|".
Usage: Command 1 | Command 2 His function is to pass the result of the first command 1 execution as input of the Command2 to command 2:

Ideviceinstaller-u Udid-l|awk ' {print $} ' |grep Com.test.XXXX

Ideviceinstaller-u udid-l  List installed third-party apps

awk ' {print '} '   retains the first column of third-party application results from the previous row

grep Com.test.XXXX  Search in the first column of the reservation Com.test.XXXX

In the Shell | Usage