I really worried about what should I write in my admission documents, such as resume/CV, statement of purpose, informal email communications with professors. From the list below, please tell me what items have enough academic value to be mentioned in such documents?

Note that its a application in PhD program in computer science for US universities 


Stack Overflow (generally Stack Exchange) reputation and badges
Coursera accomplished courses
Small-scaled programming projects (absolutely with no academic value)
Github programming repositories



Question: Find cron jobs that run between given times
Answer: You could copy and paste the crontab file into Excel and then create a few functions that do this.  Since the time fields are always in the same place, your columns in Excel would correspond to the timeframe in which that command is executed.

You'll have to write your formula so that is accounts for single integer values and repeating values (like 10 versus */10).

If your crobtab file changes a lot and you have many entries, then you could probably write a php script to parse this information pretty quickly.