$ ls -l /proc/self/fd/ <<< "TEST" total 0 lr-x------ 1 user1 user1 64 Aug 20 13:43 0 -> /tmp/sh-thd.761Lj9 (deleted) lrwx------ 1 user1 user1 64 Aug 20 13:43 1 -> /dev/pts/4 lrwx------ 1 user1 user1 64 Aug 20 13:43 2 -> /dev/pts/4 lr-x------ 1 user1 user1 64 Aug 20 13:43 3 -> /proc/10068/fd
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