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How do I increase the number of “pseudo” terminals(ptys) ?

April 26, 2017increase pseudo ptys terminals

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How do I increase the number of “pseudo” terminals(ptys) ?

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For SunOS4.1.x: To add more ptys you must install a new kernel. The default number of “ptys” is 48. To get more “ptys” change the kernel config line “pseudo-device pty” to “pseudo-device pty#” where ‘#” is the number of “ptys” you want. Be warned the maximum number you can have is 255(don’t use 256, this wraps to 0) For SunOS5.x: In /etc/system, add the line: set pt_cnt=nnn — nnn can have a value up to 255. touch /reconfigure and reboot using ‘init 6’.