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UDP and TCP

UDP and TCP

# prtconf –vp | GREP bootpath

or

# EEPROM

# prtconf –vp | grep bootpath

or

# eeprom

# psradm –f (no of the PROCESS)
# psradm –a –n ( no of the process)

# psradm –f (no of the process)
# psradm –a –n ( no of the process)

# psrinfo –v

# psrinfo –v

# PS –U ORACLE

or

#ps –fu oracle | GREP SMON

# ps –U oracle

or

#ps –fu oracle | grep smon

# who

# who

# who –r

# who –r

Ping test, service ENABLE or not in (/etc/inetd.conf), NIS problem

If telnet is not working, first of all you will not be get connected, login through console access and then find out with ps -ef | GREP telnetd or Kill -1

Ping test, service enable or not in (/etc/inetd.conf), NIS problem

If telnet is not working, first of all you will not be get connected, login through console access and then find out with ps -ef | grep telnetd or Kill -1

# /etc/service

# /etc/service

FTP = 21ssh = 22Telnet = 23nfs = 2049nis = 749

ftp = 21ssh = 22Telnet = 23nfs = 2049nis = 749

# Pkill –HUP INETD

# Pkill –HUP inetd

To SET the HIGH priority for the process

-20 high priorities
+20 low priorities

EG: # NICE –20 oracle

To set the high priority for the process

-20 high priorities
+20 low priorities

Eg: # nice –20 oracle

RPC SERVICE ( /etc/rpc)

Rpc service ( /etc/rpc)

IOSTAT ,VMSTAT , prstat , SAR ,NETSTAT, TOP

Iostat ,vmstat , prstat , sar ,netstat, top

SETUID to SET on /usr/bin/passwd COMMAND

Setuid to set on /usr/bin/passwd command

/etc/passwd: 644
/etc/shadow: 400

/etc/passwd: 644
/etc/shadow: 400

FILE: 644
directory: 755

file: 644
directory: 755

• Setuid : When setuid permission SET on a executable file, user who access the file is granted access permission of the owner of the file.

# find / -prem –4000

• setgid : Permission SIMILAR to setuid, The process is changed to owner of the file.

# find / -prem –2000

• Stickybit : It is a SPECIAL permission that protect the files WITHIN a public writable directory. Stickybit permission set the SHARED directory, user can create a files or directory. But only by owner of the directory can modify or delete.

# find / -prem –1000

# find / -prem –4000

# find / -prem –2000

# find / -prem –1000

#PASSWD –x –1 (USERNAME)

#passwd –x –1 (username)

# isainfo –kv

# isainfo –kv

# /usr/dt/bin/dtconfig –e ( ENABLE)
# /usr/dt/bin/dtconfig –d ( DISABLE)

# /usr/dt/bin/dtconfig –e ( enable)
# /usr/dt/bin/dtconfig –d ( disable)

# /usr/sbin/sys-unconfig

# /usr/sbin/sys-unconfig

# devfsadm –c DISK

# devfsadm –c disk

# FIND / -NAME “ABC” –exec RM {};

# find / -name “abc” –exec rm {};

# /etc/init.d/nfs.server START
# /etc/init.d/nfs.server STOP

# /etc/init.d/nfs.server start
# /etc/init.d/nfs.server stop

SERVER : # SHARE & dfmount
Client : # showmount –e (HOSTNAME) and dfshares

Server : # share & dfmount
Client : # showmount –e (hostname) and dfshares

OK printenv

OK printenv

Hardmount: Normal file system mount used mainly for mounting local file systems. Once a file system is hard mounted, can use a normal FILESYSTEM untill its umount.

Soft mount: It allows AUTOMATIC UNMOUNTING if the filesystem is IDLE for a specified timeout PERIOD. It is mainly used for network filesystems like NFS It can be configured using Autofs and the network filesystem can be soft mounted.

Hardmount: Normal file system mount used mainly for mounting local file systems. Once a file system is hard mounted, can use a normal filesystem untill its umount.

Soft mount: It allows automatic unmounting if the filesystem is idle for a specified timeout period. It is mainly used for network filesystems like NFS It can be configured using Autofs and the network filesystem can be soft mounted.

# LK USERNAME

# lk username

For 64 BIT:
# EEPROM boot-file=”/kernel/sparc9/unix
or
OK printenv boot-file
OK settenv boot-file kernel/sparc9/unix

For 32 bit:
# eeprom boot-file=”/kernel/unix
or
OK printenv boot-file
OK settenv boot-file kernel/unix

For 64 bit:
# eeprom boot-file=”/kernel/sparc9/unix
or
OK printenv boot-file
OK settenv boot-file kernel/sparc9/unix

For 32 bit:
# eeprom boot-file=”/kernel/unix
or
OK printenv boot-file
OK settenv boot-file kernel/unix

Ypserv
Ypbind

Ypserv
Ypbind

rpc.yppasswdd
Ypxfrd
rpc.ypupdated

rpc.yppasswdd
Ypxfrd
rpc.ypupdated

RAID 0 Concatenation/Striping
RAID 1 Mirroring
RAID 5-Striped array with rotating parity.

• Concatenation: Concatenation is joining of two or more disk slices to add up the disk space. Concatenation is serial in nature i.e. sequential DATA operations are performed serially on first disk then second disk and so on. Due to serial nature new slices can be added up without having to take the backup of entire concatenated volume, adding slice and restoring backup.
• Striping: Spreading of data over multiple disk drives mainly to enhance the performance by distributing data in alternating chunks – 16 k interleave ACROSS the stripes. Sequential data operations are performed in parallel on all the stripes by reading/WRITING 16k data blocks alternatively form the disk stripes.
• Mirroring: Mirroring PROVIDES data redundancy by simultaneously writing data on to two sub mirrors of a mirrored device. A submirror can be a stripe or concatenated volume and a mirror can have three mirrors. Main concern here is that a mirror needs as much as the volume to be mirrored.
• RAID 5: RAID 5 provides data redundancy and advantage of striping and uses less space than mirroring. A RAID 5 is made up of at least three disks, which are striped with parity information written alternately on all the disks. In CASE of a single disk failure the data can be rebuild using the parity information from the remaining disks.

RAID 0 Concatenation/Striping
RAID 1 Mirroring
RAID 5-Striped array with rotating parity.

#/etc/lvm/md.tab

or

#/etc/opt/SUNWmg/md.tab

#/etc/lvm/md.tab

or

#/etc/opt/SUNWmg/md.tab

PHYSICAL FIBER cable which is connect to the 2 NODES is CALLED a HTEARTBEAT

Physical fiber cable which is connect to the 2 nodes is called a HTEARTBEAT

# UFSDUMP 0F – /dev/rdsk/c0t0d0s6 | (CD /mnt/haz UFSRESTORE XF -)

# ufsdump 0f – /dev/rdsk/c0t0d0s6 | (cd /mnt/haz ufsrestore xf -)

# MT /dev/rmt/0 STATUS

# mt /dev/rmt/0 status

# UFSDUMP 0uf /dev/rmt/1

# ufsdump 0uf /dev/rmt/1

ufsdump: 

1. Used for complete file SYSTEM backup.
2. It copies every THING from regular files in a file system to special CHARACTER and block device files.
3. It can work on mounted or UNMOUNTED file systems.

Tar:

1. Used for single or multiple files backup.
2. Can’t backup special character & block device files.
3. WORKS only on mounted file system.

ufsdump: 

Tar:

CRONTAB: JOB can be SCHEDULED

At: Job can be a RUN once only

Crontab: job can be scheduled

At: Job can be a run once only

0-9 LEVEL

0 = Full BACKUP

1-9 = Incremental backup of file,That have CHANGED since the last LOWER level backup.

0-9 level

0 = Full Backup

1-9 = Incremental backup of file,That have changed since the last lower level backup.

Incremental: Only those files will be INCLUDED which have been changed SINCE the LAST backup.

DIFFERENTIAL: Only those files will be included which have been changed since the last Full backup.

Incremental: Only those files will be included which have been changed since the last backup.

Differential: Only those files will be included which have been changed since the last Full backup.

# VI /etc/system

(To comment the ERROR LINE in /etc/system files, we have to USE *)

# Vi /etc/system

(To comment the error line in /etc/system files, we have to use *)

System can not find the /etc/path_to_install file. It might be missing or corrupted and needs to be rebuild.

To rebuild this file boot the system with -ar option :

ok>boot -ar

PRESS enter to SELECT default VALUES for the QUESTIONS asked during booting and select yes to rebuild /etc/path_to_install

The /etc/path_to_inst on your system does not exist or is empty. Do you WANT to rebuild this file [n]? y

system will continue booting after rebuilding the file.

System can not find the /etc/path_to_install file. It might be missing or corrupted and needs to be rebuild.

To rebuild this file boot the system with -ar option :

ok>boot -ar

Press enter to select default values for the questions asked during booting and select yes to rebuild /etc/path_to_install

The /etc/path_to_inst on your system does not exist or is empty. Do you want to rebuild this file [n]? y

system will continue booting after rebuilding the file.

If a disk shows consistently HIGH reads/writes along with , the percentage BUSY (%b) of the disks is greater than 5 percent, and the average service time (svc_t) is greater than 30 milliseconds, then one of the following action needs to be taken

If a disk shows consistently high reads/writes along with , the percentage busy (%b) of the disks is greater than 5 percent, and the average service time (svc_t) is greater than 30 milliseconds, then one of the following action needs to be taken

• # VI /var/spool/cron/crontabs/root
• The COMMAND to EDIT the CRONTAB is #crontab -E

“ No “ WITHOUT LABEL the DRIVE, you can’t do ANYTHING

“ No “ without label the drive, you can’t do anything

# prstat –a

# prstat –a