Linux, Why can't I write even though I have group permissions?

linux permissions file-permissions
Ben McCann picture Ben McCann · Feb 20, 2011 · Viewed 95.7k times · Source

I want to create a file in a directory owned by the staff group which I am a member of. Why can I not do this?

bmccann@bmccann-htpc:~$ ls -l /usr/local/lib/R/
total 4
drwxrwsr-x 2 root staff 4096 2010-07-31 16:21 site-library
bmccann@bmccann-htpc:~$ id -nG bmccann
bmccann adm dialout cdrom plugdev staff lpadmin admin sambashare
bmccann@bmccann-htpc:~$ touch /usr/local/lib/R/site-library/tmp
touch: cannot touch `/usr/local/lib/R/site-library/tmp': Permission denied

Answer

AdamJonR picture AdamJonR · Feb 20, 2011

Did you logout and log back in after making the group changes? See:
Super User answer involving touch permissions failure

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