Hi Frederick,
#!/bin/bash SCREEN=/usr/bin/screen $SCREEN -dmS x time $SCREEN -S x -X setenv A B $SCREEN -S x -X quit
Perhaps it's closing more file descriptors now than before? $ strace -c screen -dmS x Directory '/run/screens' must have mode 777. % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 99.98 11.762280 22 524299 524285 close 0.00 0.000328 16 20 8 openat 0.00 0.000323 10 30 mmap 0.00 0.000304 16 18 read 0.00 0.000192 14 13 fstat 0.00 0.000132 66 2 2 connect 0.00 0.000130 32 4 lstat 0.00 0.000104 26 4 rt_sigaction 0.00 0.000094 94 1 readlink 0.00 0.000092 46 2 socket 0.00 0.000071 7 9 7 stat 0.00 0.000063 31 2 munmap 0.00 0.000063 21 3 brk 0.00 0.000048 48 1 write 0.00 0.000041 3 11 mprotect 0.00 0.000041 10 4 4 access 0.00 0.000032 32 1 ioctl 0.00 0.000028 7 4 lseek 0.00 0.000025 25 1 umask 0.00 0.000025 25 1 getuid 0.00 0.000025 25 1 getgid 0.00 0.000025 25 1 geteuid 0.00 0.000024 24 1 getegid 0.00 0.000000 0 1 execve 0.00 0.000000 0 3 fcntl 0.00 0.000000 0 2 1 arch_prctl 0.00 0.000000 0 1 prlimit64 ------ ----------- ----------- --------- --------- ---------------- 100.00 11.764490 524440 524307 total $ And that's because of prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=512*1024}) = 0 close(524287) = -1 EBADF (Bad file descriptor) close(524286) = -1 EBADF (Bad file descriptor) close(524285) = -1 EBADF (Bad file descriptor) ... -- Cheers, Ralph.