see explanation below.
Explanation
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)

See explanation below.
Explanation/Reference:
Explanation:
chmod g+s /archive
Verify using: ls -ld /archive Permission should be like:
drwxrws--- 2 root sysuser 4096 Mar 16 18:08 /archive
If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory.
To set the SGID bit: chmod g+s directory
To Remove the SGID bit: chmod g-s directory

# useradd -u 601 -s /sbin/nologin user1
# passwd user1
redhat

/proc is the virtual filesystem, containing the information about the running kernel.
To change the parameter of running kernel you should modify on /proc. From Next reboot the system, kernel will take the value from /etc/sysctl.conf.