Rock your everyday

> When running Shell script, enable the debug mode with -x option.E.g. sh -x yourscript.sh
> When running Python script, import pdb - the Python debugger, call the set_trace() function and enter n in the console for next debug output. E.g.

#!/usr/bin/python
# epdb1.py -- experiment with the Python debugger, pdb
import pdb
def combine(s1,s2):      # define subroutine combine, which...
 s3 = s1 + s2 + s1    # sandwiches s2 between copies of s1, ...
 s3 = '"' + s3 +'"'   # encloses it in double quotes,...
 return s3            # and returns it.
a = "aaa"
pdb.set_trace()
b = "bbb"
c = "ccc"
final = combine (a,b)
print final