CODEWITHSUNDEEP
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aport002
aport002

Reputation: 1043

Checking file owner permissions

I'm trying to test if a file has the execute bit set for the owner in bash script.

I know if [ -x filename ] checks for execute permission for the User running the statement but i need to know if the owner has it. Is there a way to specify owner?

Upvotes: 34

Views: 45535

Answers (1)

Chriszuma
Chriszuma

Reputation: 4557

You can use stat to get the file permissions, and parse them with another command to get the character you want. 

stat -c %A someFile

Returns something like:

-rw-rw-r--

EDIT: Here you go:

stat -c %A someFile | sed 's/...\(.\).\+/\1/'

Returns either - or x if the owner has execute.

EDIT 2: For completion's sake:

if [ `stat -c %A someFile | sed 's/...\(.\).\+/\1/'` == "x" ] 
then
  echo "Owner has execute permission!"
fi

EDIT 3: If you prefer numerical permissions:

stat -c %a /path/to/a/file will output 600 or 700 or whatever 3 digit base-8 number.

Upvotes: 53

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