These are some handy Linux terminal commands that give a filtered LogCat log. The given keywords are highlighted in the terminal
adb logcat -v time wpa_supplicant:S dalvikvm:S | grep --color -E '^|some|keywords|to|highlight'
The following command only shows prints from a given tag:
adb logcat -v time MyTag:D *:S | grep --color -E '^|some|keywords|to|highlight'