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Display numerical chmod permissions within ls -l. From: http://stackoverflow.com/questions/1795976/can-the-unix-list-command-ls-output-numerical-chmod-permissions
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| 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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