Can the Unix list command 'ls' output numerical chmod permissions?

Question

While listing a directory can I view numerical Unix permissions such as 644 rather than the symbolic output 

-rw-rw-r--

Answer 1

Use the below code:

 ls -l | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/) \

             *2^(8-i));if(k)printf("%0o ",k);print}'

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