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====== Adding and Removing Linux Permissions ======
<color darkorange>2016</color>

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**Granting Permissions** 
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Grant the execute permission to the group.
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    ls -l example.py
    -rw-r--r-- 1 pi pi 4452 Jul 25 18:01 example.py
    chmod g+x example.py --- g is for group, x is for execute
    ls -l example.py
    
    -rw-r-xr-- 1 pi pi 4452 Jul 25 18:01 example.py

    The group rights have changed from ----r------ to ----r-x---  (only looking at group, not listed Owner or Other)
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If required, more than one permission can be changed at once, for example I want to give write and execute to 'Other'
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    ls -l example.py
    -rw-r--r-- 1 pi pi 4452 Jul 25 18:01 example.py
    chmod o+wx example.py --- o is for owner, w is for write, x is for execute
    ls -l example.py
    
    -rw-r--rwx 1 pi pi 4452 Jul 25 18:01 example.py

    The Other rights have changed from --------r-- to -------rwx
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**Removing permissions** 
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This is the exact opposite, instead of using a + (plus) we use a - (minus)
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    ls -l example.py
    -rw-r--rwx 1 pi pi 4452 Jul 25 18:01 example.py
    chmod o-wx example.py --- o is for owner, w is for write, x is for execute
    ls -l example.py
    
    -rw-r--r-- 1 pi pi 4452 Jul 25 18:01 example.py

    The Other rights have changed from --------rwx to -------r--
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