Sams Teach Yourself Shell Programming in 24 Hours, Second Edition

Hour 20

1:	What are the three main forms of enabling debugging in a shell script?
A1:	The three main methods are Issue the script in the following fashion: $ /bin/sh option script arg1 arg2 arg3 Change the first line of the script to #!/bin/sh option Use the set command as follows: set option Here option is the debugging option you want to enable.
2:	Enhance the Debug() function given in this chapter so that the programmer has to press Enter or Return after debugging is deactivated. When you debug scripts that have several dozen functions, this feature enables you to study the debugging output from a particular function before executing the next function.
A2:	Here is one possible implementation: Debug() { if [ "$DEBUG" = "true" ] ; then if [ "$1" ...