I am learning Linux using Ubuntu. I need one liner wc commands that displays following info:

1. shows number of line in example.sh:
wc-l example.sh (this one i got)

2. shows number of line that are comments in example.sh
3. shows number of block devices in /dev
4. shows number of files in home directory
5. shows number of lines of each file in given directory dir
6. Write a script test.sh to calculate
- number of lines in Testname if exe ./test.sh Testname
- number of lines of each file in directoyname if exe ./test.sh directoryname

thanks

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or in a terminal will tell you much of what you need to know

Check: http://www.computerhope.com/unix/uwc.htm

And see here for examples of usage: http://www.commandlinefu.com/command.../sort-by-votes