Redhat Logs Rotation

/etc/logrotate.conf

$ ls -l /etc/logrotate.d
total 64
-rw-r--r--. 1 root root 155 Aug 20  2014 aide
-rw-r--r--. 1 root root 178 Jun 23  2015 chrony
-rw-r--r--  1 root root 292 Mar 19 09:50 content_gateway_rotate
-rw-r--r--. 1 root root  71 Jul 21  2015 cups
-rw-r--r--  1 root root 172 Jun 29  2016 iscsiuiolog
-rw-r--r--  1 root root 165 May 26  2016 libvirtd
-rw-r--r--  1 root root 163 May 26  2016 libvirtd.qemu
-rw-r--r--. 1 root root 106 Sep  5  2014 numad
-rw-r--r--. 1 root root 136 Jan 27  2014 ppp
-rw-r--r--. 1 root root 408 Oct  1  2014 psacct
-rw-r--r--  1 root root 115 Jul  4  2016 samba
-rw-r--r--. 1 root root  71 Oct 13  2015 subscription-manager
-rw-r--r--. 1 root root 224 Sep  8  2015 syslog
-rw-r--r--. 1 root root  32 Dec  9  2013 up2date
-rw-r--r--. 1 root root 100 May 20  2015 wpa_supplicant
-rw-r--r--. 1 root root 100 Sep 11  2015 yum


$cat /etc/cron.daily/logrotate
#!/bin/sh

/usr/sbin/logrotate /etc/logrotate.conf
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
    /usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0

UNIX performance tuning commands

Linux
nproc
lscpu
top
sar
iostat
vmstat

Solaris
prstat -a

redhat su: Permission denied

edit

 /etc/pam.d/su

remark the following line

auth       required     pam_wheel.so use_uid

It requires users to be in the wheel group to be able to switch user. 

User switching as non-root works again when this pam module is disabled for su.

kmplayer lag

過濾器控制>來源撥放器>其他>matroska 打勾 過濾控制器>解碼器使用>內部視訊解碼器>通用>H.264　設為

ksh rename file

rename all *.p.enc file to *.enc


for f in $(ls *.p.enc)
do

mv ${f} ${f%p}enc

done

HMC web console V7R7.3 pending issue

For Firefox
1) Start up Firefox 
2) In the URL area, type about:config 
3) In the search area type tls 
4) Change security.tls.version.min from "1" (default) to "0." 
5) Change security.tls.version.fallback-limit from "1" to "0"

For Chrome
1) Start Chrome 
2) In the URL area type: chrome://flags 
3) Find the "Minimum SSL/TLS version supported" flag and change the value to SSLv3. 

Edit the "last" output in AIX

/usr/sbin/acct/fwtmp <./wtmp > ./dummy.file

/usr/sbin/acct/fwtmp -ic <./dummy.file > ./wtmp

Export Windows Update History

Windows 2008

wmic qfe get /format:csv > updates.csv

Windows 2008 Time sync. configuration

1. check the time server with "w32tm /stripchart /computer:[Time_Server_IP] /dataonly /samples:5"

2. sync by setting "w32tm /config /manualpeerlist:[Time_Server_IP],0x8, /syncfromflags:manual /update"

• 0x8 -- set Windows time to use client mode

3. Or if it has joined the domain, default it should be syncing with one of the Domain controllers

4. you can manually configure that by typing: "w32tm /config /syncfromflags:domhier /update"

5. restart the time service

• net stop w32time
• net start w32time

6. "w32tm /resync" to sync immediately ( it may failed, re-run step1 to verify the status)

Export and Import DHCP Reservations for Windows Server

Export the DHCP reservation list on A server,

netsh dhcp server [ip address] scope [scope address] dump > reservation_list.txt
e.g. netsh dhcp server 172.17.32.131 scope 172.17.32.0 dump > reservation_list.txt

Edit the exported file in notepad 'reservation_list.txt' , Simply do a Find and Replace for the A server IP you ran the export on and change to the B server IP you are importing to and remove out everything else in the text file except for the reservations config section.

Import the DHCP reservation list:
netsh exec reservation_list.txt

AIX NFS sharing/mounting

NFS Sharing

start NFS service
-->smitty-->Communications Applications and Services-->NFS-->Network File System (NFS)-->Configure NFS on This System-->Start NFS
share a file system
-->smitty-->Communications Applications and Services-->NFS-->Network File System (NFS)-->Add a Directory to Exports List (or smitty mknfsexp)
list out all shared file system
#showmount -e localhost

NFS Mounting


mount a file system
-->smitty-->Communications Applications and Services-->NFS-->Network File System (NFS)-->Add a File System for Mounting (or smitty mknfsmnt)

Add static route in windows

Add static route in windows:

 1. shows routing table

 netstat -nr

 2. permanent add connecting to 172.17.0.0 through 172.17.32.1 gateway with the lower priority 2

 route -p add 172.17.0.0 mask 255.255.0.0 172.17.32.1 metric 2

Error: The remote session was disconnected because there are no Remote Desktop client access licenses available for this computer. Please contact the server administrator.

remove the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSLicensing

blocking application in winXP

1. Start->Run->secpol.msc 

2. Expand software restriction policies
Right click Additional rules-> New Path Rule
Path: C:\Program Files\Outlook Express\msimn.exe
Security Level: Disallowed
Click OK

Manage Windows7 SEP client with SEP 11 SEM

1.) Clients don't appear in the SEM console
a. Delete %programfiles%\Common Files\Symantec Shared\HWID\sephwid.xml
b. Open the registry and navigate to HKLM\Software\Symantec\Symantec Endpoint Protection\SMC\Sylink\Sylnk
c. Edit the "HardwareID" value data to be blank
d. Restart the client workstation or Symantec Management Client (SMC) service in the services snap-in.

refer: http://www.symantec.com/business/support/index?page=content&id=TECH102815&locale=en_US

sed & awk

Split the line with field separator ".", and restructuring again

awk -F. '/stbdbp/{ print $2"."$3"."$4"."$5".Z"}' ./list.txt

 

Insert "go" to the next of every lines from test_new.log

sed '1,$ {
        a\
go
}' test_new.log

 

Remove the line which contains "#" from test_new.log

sed '/#/d' test_new.log

 

Remove blank line from test_new.log

sed '/^[ ]*$/d' test_new.log

solaris 10 with Storage 3320

#sccli
>show lun
>show channel
>show logical-drive
>show partition

Veritas Cluster Server (VCS) Cheat sheet

From http://slashzeroconf.wordpress.com/2007/10/19/veritas-cluster-server-vcs/

error log, enable tty console

errlogter (test the errpt)
/usr/lib/errdemon (errpt demon)
alog -o -t console (show console message)

smitty tty

check memory info. in AIX

# bootinfo -r

# svmon -G (use 4K block to count)
size inuse free pin virtual
memory 1048576 584861 463715 82089 532513
pg space 425984 409635

work pers clnt lpage
pin 82089 0 0 0
in use 289507 295354 0 0