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-bash-3.2$ pstree 29838
-bash-3.2$ pstree 24423
Any way to interpret this? Why would this happen?
The output is garbled because of locale(current language) setting. Doing LANG=C disables the localization (sets it to default language).
So the solutions to your problem is either disable localization and do
$ LANG=C psteree
or ask pstree to print ascii characaters by
$ pstree -A
Required, but never shown