问题
When trying to run rlwrap tclsh I am getting this error message:
rlwrap: Could not open master pty: No such file or directory
What causes this? How to fix this issue?
P.S. I am running 64 bit CentOS.
回答1:
check /dev/ptmx it should have crw-rw-rw- I once had it crw------- this caused the error message at my system.
see also man ptmx:
The file /dev/ptmx is a character file with major number 5 and minor number 2, usually of mode 0666 and owner.group of root.root. It is used to create a pseudo-terminal master and slave pair.
来源：https://stackoverflow.com/questions/3886629/rlwrap-could-not-open-master-pty-no-such-file-or-directory