Shell scripts have certain advantages over compiler-based programs, such as C or C++ language. However, Shell scripting has certain limitations as well.
The following are the advantages:
Scripts are easy to write
Scripts are quick to start and easy for debugging
They save the time of development.
Tasks of administration are automated
No additional setup or tools are required for developing or testing Shell script
The following are the limitations of Shell scripts:
Every line in Shell script creates a new process in the operating system. When we execute the compiled program such as C program, it runs as a single process for the complete program.
Since every command creates a new process, Shell scripts are slow as compared to compiled programs.
Shell scripts are not suitable if heavy math operations are involved.
There are Problems with cross-platform portability.
We cannot use Shell scripts in the following situations when:
Extensive file operations are required
We need data structures, such as linked lists or trees
We need to generate or manipulate graphics or GUIs
We need direct access to system hardware
We need a port or socket I/O
We need to use libraries or interface with legacy code
Proprietary, closed source applications are used (Shell scripts put the source code right out in the open for the entire world to see)