hi
i am unable to solve the below issue.
$ ls
zsh: fork failed: not enough space

users unable to create their own accounts in a solaris servers.above error getting.
# ulimit -c unlimited
# ulimit -n
1024
and also tried
# ulimit -a
cpu time (seconds) unlimited
file size (blocks) unlimited
data seg size (kbytes) unlimited
stack size (kbytes) unlimited
core file size (blocks) unlimited
file descriptors 1024
virtual memory size (kb) unlimited

# mkfile 1024m /swapfile
# swap -a /swapfile
# vi /etc/vfstab
added /swapfile line in /etc/vfstab file
but still getting same

zsh: fork failed: not enough space

what is the reason? any solution for this?

Try a

df -h

df -h not working.

#df -h
illegal option -h.

what is the alternate solution?

Could be a problem in zsh, malloc()/libc or the kernel. Try to reinstall or upgrade at least 1 of the 3.

df without the -h