Debugging Methods for Shell scripts

Source: Internet
Author: User
Debugging Methods for Shell scripts

The shell provides some options for debugging scripts, as follows:


Read the command in the script but not execute it to check for syntax errors in the script


Executes scripts while printing executed script commands to standard error output


Provides trace execution information and prints each command and result that executes sequentially

There are three ways to use these options, one to provide parameters at the command line

$ sh-x./

The second is to provide parameters at the beginning of the script

    #! /bin/sh-x

The third method is to enable or disable parameters with the SET command in the script

    #! /bin/sh    If [-z], then      set-x      echo "Error:insufficient Args."      Exit 1      set +x    fi

The Set-x and set +x respectively indicate that the-x parameter is enabled and disabled, so that only one segment of the script can be tracked for debugging.

Debugging Methods for Shell scripts

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