run command in sh script code example

Example 1: how to run shell script

chmod +x <fileName>
./fileName.  # or use ->. bash fileName

Example 2: how to run shell script

include 
#!/bin/bash (1st line inside yourfile.sh)

to run
./yourfile.sh

if you do not include that line
bash yourfile.sh

Example 3: how to run shell script

bash yourfile.sh