Wrap 'nosh_usrs' user names in word boundaries

[jahatfi]

This is to prevent false positives when such names are substrings of other strings:
Before

After:

[github-actions]

File: linPEAS/builder/linpeas_parts/linpeas_base.sh

1. Line 452-455: Security Issue / Code Smell

   • The script is reading the /etc/passwd file which contains sensitive user information. Although it's a common practice in Unix-like systems, it's important to ensure that this script is run with appropriate permissions and the output is handled securely.
   • The use of grep, cut, tr, sed, and awk in a pipeline can be inefficient and hard to maintain. Consider using a single awk command to achieve the same result. This would improve the performance and readability of the code.

2. Line 455: Code Bug

   • The awk command is used before sort and cut which could lead to incorrect results. The awk command should be used after cut to ensure it's applied to the correct field.

3. Line 455: Code Smell

   • The use of a magic string "ImPoSSssSiBlEee" can lead to potential issues if this string somehow becomes a valid username. Consider using a more unique string or a different approach to mark the end of the list.

4. General: Security Issue

   • There is no evidence of input validation or error handling in this script. It's important to validate any input and handle errors appropriately to prevent potential security issues and crashes.