Solaris General Interview Preparation Guide

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If you want to use the 20gb free space in that file system,
bring the system to single user mode and then take the
entire backup of that file system . Then format the file
system using newfs /dev/rdsk/c#t#d#s# after mount the file
system using mount command and restore the backup then you
can use the 20gb free space.

may be many zombie process are running or harware error,
ps -el is a command to check any zombie processes are
running, if is the issue then issue preap command to kill
the multiple zombie processes, if it a hardware error then
issue iostat -en command to see the hardware errors.

To list a summary of the system’s virtual swap space :

# swap -s

To list the details of the system’s physical swap areas:

# swap -l

VTS stands for Validation and Test Suite which is used to
run tests on any Sun Supported hardware and hardware
components and report the health status from which the
faulty devices ca be identified. In order to do this the VTS
package needs to be installed.

The path to see the shared memory

/usr/sbin/sysdef | grep SHMMAX

single-user
multi-user
multi-user-server
network
name-services
sysconfig
devices

nfsd; statd; lockd; mountd; for server
and for clients are statd; and lockd

for CD-ROM-default mount point is /cdrom/cdrom0, ro for
read only
#mount -F hsfs -o ro <dev name> <mount point>
example:
#mount -F hsfs -o ro /dev/dsk/c0t1d0s0 /cdrom/cdrom0

for DVD-ROM-default mount point is /cdrom/cdrom0, ro for
read only
#mount -F udf -o ro <dev name> <mount point>
example:
#mount -F udf -o ro /dev/dsk/c0t1d0s0 /cdrom/cdrom0

for floppy-device name is /dev/diskette0
#mount -f pcfs <dev name> <mount point>
example:
#mount -F pcfs /dev/diskette0 /dir1

There are 3 types of file system -

A] Disk based file system (pcfs, ufs, udfs, hsfc)
B] Distributed file system (nfs, autofs, cachefs)
C] Pseudo files system (virtual file system, memory based
file system, swapfs, procfs, mntfs, dev, & tmpfs)

# coreadm –e –f <path of core file>