To activate developer mode in Android , go to Settings > About phone . There you can see Build Number. Tap the option 7 times then developer mode will be activated. Now enjoy deploying the app you develop in Android Studio into the phone instead of creating virtual device in the IDE.
Sometimes we may need to get records count from file . For that we can use wc -l , command with file name. In some situation the file will be in compressed format . wc -l will not directly work with zipped files . In this case we can do zcat the file and pipe the word count command with it. Example : Let say we have a file cricketData.dat.gz To get word count from the file use : zcat cricketData.dat.gz | wc -l This will give the record count.
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