RHEL6 某业务用户ulimit -a命令找不到

最终确定是shell环境问题，临时改为/bin/bash即可查看.

1.问题现象

# su - jingyu
$ id
uid=(jingyu) gid=(jingyu) groups=(jingyu)
$ ulimit -a
ulimit: Command not found.

2.临时切换为/bin/bash即可查看

$ echo $SHELL
/bin/csh
$ bash
$ ulimit -a
core file size          (blocks, -c)
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e)
file size               (blocks, -f) unlimited
pending signals                 (-i)
max locked memory       (kbytes, -l)
max memory size         (kbytes, -m) unlimited
open files                      (-n)
pipe size            ( bytes, -p)
POSIX message queues     (bytes, -q)
real-time priority              (-r)
stack size              (kbytes, -s)
cpu time               (seconds, -t) unlimited
max user processes              (-u)
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited
$