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lang-bash
currentuser(sometime) with multiline users, use$(who | awk 'NR==1{print $1}')instead.chown -R $currentuser:$currentuser /usr- does not work - still shows root:rootwhois not guaranteed to produce any output. (2) If it does, there is no guarantee that the first line of output identifies the current user. What if somebodyssh’ed into your system? What if you aressh’ed into some other system? (3)lognameseems to be more reliable.