Increase size of tmpfs file system

ex: change to 8G 

edit /etc/fstab

tmpfs                   /dev/shm                tmpfs   defaults,size=8g        0 0

mount -o remount /dev/shm

Enabled LLDP Alcatel Switch

SET LLDP System NAME:

system name ALL-Uplink
system location SIAM-FL11

SHOW LLDP Configure:

show lldp config or show lldp local-system

ENABLE LLDP remote System:

lldp chassis tlv management port-description enable system-name enable system-description enable system-capabilities enable
lldp chassis tlv management management-address enable
lldp chassis tlv dot1 vlan-name enable port-vlan enable
lldp chassis tlv dot3 mac-phy enable

Clear /BOOT Linux Ubuntu

Clear /BOOT Linux Ubuntu

1. uname -r @check Current Linux Kernal
2. dpkg --list 'linux-image*' @List All Linux kernel Images Store in /BOOT

- Manual delete

$sudo apt-get remove linux-image-VERSION @Manual delete Linux kernel Images

- Auto remove (recommend)

$sudo apt-get autoremove

- Update 
$sudo apt-get update


- Run Grub Update

$sudo update-grub

Generate scrip using dbms_metadata.get_ddl in ORACLE

select dbms_metadata.get_ddl('OBJECT_TYPE','OBJECT_NAME','OWNER') a from dual

ex.

:TYPE TABLE

select dbms_metadata.get_ddl('TABLE','PMS_ACADEVALSTAFFWORKPUB','HRIS') a from dual

:TYPE CONRAINTS

SQL> set linesize 200
SQL> col c format a100
SQL>set long 9999
SQL> select dbms_metadata.get_ddl('CONSTRAINT', 'PK_APP_POSTAPPLICANTTOPIC','HRIS') c from dual;

C
--------------------------------------------------------------------------------

  ALTER TABLE "HRIS"."APP_POSTAPPLICANTTOPIC" ADD CONSTRAINT "PK_APP_POSTAPPLICANTTOPIC" PRIMARY KEY ("ID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS"  ENABLE

7zip command

Download 7zip Command and copy file to C:\window\system32

FOR %i IN (*.*) DO 7za.exe a "%~ni.zip" "%i"

Find and Exec

mtime,ctime,atime
Option in Find Command ON Linux

mtime - modified content in files
ctime - mofified Permision, Group, Owner
atime - Time to access files

exp:

find /u03/rman-backup/ \  <----- path to finding
-name "*NIDAREG*" \    <------- find word in FileName
-mtime -1 \        <------- Modified Time ( in this case , time to Create file on last day (-1))
-exec scp -p {} admin@192.168.1.10:/STORAGE/rman-backup/NIDAREG \; <----- execute Command ( Copy file to another File Server via SCP command )

*scp option -p (preserve timestamp)

find ./*.gz \    <----- find *.gz
-mtime +7 \    <---- time over 7 day
-type f | \         <------ type File
xargs du -ksh    <-----find Size of File


STAT Command
- show atime,ctime, mtime

exp:

stat filename

[admin@M4000-Storage temp]$ stat BACKUP_NIDAREG_20170622.out
  File: ‘BACKUP_NIDAREG_20170622.out’
  Size: 33134           Blocks: 72         IO Block: 4096   regular file
Device: 810h/2064d      Inode: 112541699   Links: 1
Access: (0644/-rw-r--r--)  Uid: ( 1001/   admin)   Gid: ( 1001/   admin)
Context: unconfined_u:object_r:unlabeled_t:s0
Access: 2017-06-22 10:05:53.000000000 +0700
Modify: 2017-06-22 01:12:06.000000000 +0700
Change: 2017-06-22 10:15:57.289435709 +0700
 Birth: -


ref: http://www.unix.com/tips-and-tutorials/20526-mtime-ctime-atime.html

ADD SCSI Disk Oracle Linux

:find scsi controller

ls /sys/class/scsi_host/
host0 host1 host2

:scan scsi disk

echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan