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*** on Cloud instance (AWS&GCP)

Howtosetupopen***onAWS.A.CreateadefaultVPCB.Usethelinktocreate***serverviacloudformationofAWShttps://www.webdigi.co.uk/blog/2015/how-to-setup-your-own-private-secure-free-***-on-the-amazon-aws-cloud-i

***

on

Cloud

原创 2018-01-24 12:35:20 2103 阅读 1评论

find command

# find . -name "[a-z][A-Z][0--9][0--9].txt" -print -might return something like "wD38.txt". # find -perm 755 -print -get file with previl

脚本

shell

休闲

commands

useful

原创 2011-02-24 21:00:58 913 阅读

printer configure with rpcclient

# rpcclient scao1l01 -U root ( it is samba root user) #rpcclient $> enumprinters ### list printers queue installed &n

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configure

printer

rpcclient

原创 2011-02-14 16:20:37 724 阅读

sendmail postfix dovecot iptables and mutt

# sendmail config 1. /etc/mail/access 2. /etc/mail/local-host-name 3. /etc/mail/sendmail.mc # comment out 127.0.0.1 line 4. chkconfig sendmail on # postfix config

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原创 2010-11-18 20:50:46 837 阅读 1点赞

redhat training

#to delete a directory ,need to own w right to parent directory.#rpm management#ifdown eth0; ifup eth0#comm symmetric encriptiongpg-c install.loggpg -d install.log.pgp-----------passwd------------open

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redhat

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原创 2010-10-23 10:32:13 654 阅读

useful command

history grepdiff find / -cmin -60 --check c time last 60 minsstrace lspci --trace commandstrace -p pid --trace process body { margin: 0 0 0 0; padding:0 0 0 0

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redhat

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原创 2010-10-17 16:16:50 429 阅读

Virtualization with Xen

Basic requirement: cpu need to have pae(physical memory extention)# yum groupinstall virtualization

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redhat

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原创 2010-10-17 13:52:47 467 阅读

user admin

#sg ---- change group#gpasswd groupname ----create group passwd in /etc/gshadow#useradd [option] usernamedefault in /

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redhat

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原创 2010-10-16 14:34:28 936 阅读

mount .file system

#mount -a check /etc/fstab#mkdir -p /abc/sfs/ad recursly mkdir#mount -o nosuid,noatime /mnt#fuser /mntcheck who is using mount point /mnt#mount -o rw LABEL=guest_data&nbs

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redhat boot

原创 2010-10-16 11:45:17 799 阅读

Artifact shell for APAR

# (date;rpm -qa)>"`hostname -s`_`date +%Y%m%d`.log" this would help to generate a log file with format like : hkfs01_2001002.log with the output of date and rpm -qa ------- # to check

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shell

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APAR

Artifact

原创 2010-09-03 11:25:32 391 阅读

APAR upgrade

#rpm -Fvh --repackage fire* check if the system installed original fire* packages before install it, this avoid install addtional packages start with fire* the --repackage option is used to back up

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redhat

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原创 2010-09-01 18:21:05 774 阅读

RAID server check (RH3)

hard raid VS soft raid :there is no much merit in build soft raid on production enviromentit is very rare for enterprise to use soft raid. it will cosumet cpu resource.softraid is base on partitions.c

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scsi

休闲

原创 2010-08-11 12:10:08 894 阅读

winscp

WINscp can be used to transfer file from pc to virtual machine. but bewared that the vmware machine 's real ip address. if the vmware ip has been modified , need to check from virtual network editor

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tools

休闲

原创 2010-08-06 10:39:26 433 阅读

install system online via http server

install open source via mirrors,163.com 1. download boot.iso 2. install via http website: mirrors.163.com directory: centos/4.8/os/i386/ questions how about opensuse?

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RH install online

原创 2010-07-30 13:40:27 535 阅读

linux research

redhat or suse linuxxseries/pseries/bladecenter/vmware esxOpenldapSamba redbook 上有很多资料

linux

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原创 2010-06-02 13:59:11 391 阅读

redhat file attri

#prevent file from deletingchattr +i /etc/nisusers#allow append to file only chattr +a /tmp/employeethen you have to use something like echo " tt" >> employee to add it

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file

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attri

原创 2010-01-28 19:44:08 457 阅读

redhat-problem to be research

1./ squid configuation accross 2 lan 2/ kickstart over nfs server4/ hosts allow = .example.com. won't work in samba5/ mails going from LAN masquerate as example.com

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redhat

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原创 2009-12-22 14:57:05 400 阅读

redhat-kernel

#cat /etc/redhat-release#uname -r#mknod myusb b 8 16 make a dev file for usb device#kernel moduleslocated user /lib/modules/$(uname -r)modules are used for several reasonsreduced memory fo

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原创 2009-09-08 19:47:52 732 阅读

redhat- quota

yum install quotamount -o remount,usrquota /dev/sda5 /home quoatcheck -cugm /homeedquota -u xing or edquota -g group namequotaon /home#test by below dd if=/dev/zero of=bigfile

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原创 2009-09-06 19:53:20 590 阅读

redhat-printer confiure

# install 10relate rpm packges yum groupinstall printing # chkconfig cups on # CUPS Configuration Files /etc/printcap Adds a list of printers for sharing; used by Samba

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redhat

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原创 2009-09-04 16:35:10 750 阅读

redhat-vsftpd

# yum install vsftpd # setsebool -P ftp_home_directory 1 #local user chroot forbiden vi /etc/vsftpd/vsftpd.conf chroot_list_enable= YES chroot_list_file=/etc/vsftpd/chroot_list add

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redhat

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原创 2009-09-03 15:50:57 382 阅读

redhat-SELinux configuration

configure SELinux to support the service ===ftp===//If you want to share files anonymously chcon -R -t public_content_t /var/ftp //If you want to setup a directory where you can upload files chcon

linux

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redhat

生活

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原创 2009-08-31 08:55:50 495 阅读

yum and service packages

#install the packages needed to provide the service --Via http-- vi /etc/yum.repos.d/server.repo[server]name= redhatbaseurl=http://inst.example.com/inst/gpgcheck=1 gpgkey=http://inst.example.com/inst

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redhat

生活

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原创 2009-08-31 08:54:55 651 阅读

configure NTP

client configuration: # system-config-date take care selinux and firewall # setsebool -P ntpd_disable_trans 1#To make NTP work with a firewall, you'll need to open access in port 123 #chkco

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生活

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原创 2009-08-31 08:53:38 484 阅读

NIS / LDAP client

attach system to a network directory service, such as NIS or LDAP#system-config-authentication or authconfig-tui If you choose to activate the Enable NIS Support option, click the Configure NIS butt

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生活

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reviewed

原创 2009-08-31 08:53:05 891 阅读

lftp to access FTP URLs

use lftp to access FTP URLs # lftp ftp.redhat.com Table 1-8: Standard lftp Client Commands Command Description cd Changes the current working directory at the remote

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生活

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原创 2009-08-31 08:52:34 545 阅读

tar, gzip, and bzip2

use tar, gzip, and bzip2 gzip and bzip2 ( 2 ways to compress file) compress a big picture file. # gzip big.jpg# bzip2 big.jpg It adds a .gz or a .bz2 suffix to the file, compressed to the as

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生活

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原创 2009-08-31 08:51:34 595 阅读

gateways for IPv4 and IPv6

gateways for IPv4 and IPv6 #on route server route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.0.1 then echo "1" > /proc/sys/net/ipv4/ip_forward or vi /etc/sy

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生活

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原创 2009-08-31 08:50:25 679 阅读

input/output redirection

标准输入的控制语法：命令< 文件将文件做为命令的输入。例如： mail -s “mail test” wesongzhou@hotmail.com < file1 将文件file1 当做信件的内容，主题名称为mail test，送给收信人。 2. 标准输出的控制语法：命令> 文件将命令的执行结果送至指定的文件中。例如: l

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生活

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原创 2009-08-31 08:48:44 531 阅读

grep, sed, and awk

grep and egrep grep 'Michael Jang' /etc/passwd looks for michael jang in the /etc/passwd file. wcwc -w filename returns the number of words in that file.wc -l /etc/passwd

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原创 2009-08-31 06:29:20 668 阅读

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*** on Cloud instance (AWS&GCP)

find command

printer configure with rpcclient

sendmail postfix dovecot iptables and mutt

redhat training

useful command

Virtualization with Xen

user admin

mount .file system

Artifact shell for APAR

APAR upgrade

RAID server check (RH3)

winscp

install system online via http server

linux research

redhat file attri

redhat-problem to be research

redhat-kernel

redhat- quota

redhat-printer confiure

redhat-vsftpd

redhat-SELinux configuration

yum and service packages

configure NTP

NIS / LDAP client

lftp to access FTP URLs

tar, gzip, and bzip2

gateways for IPv4 and IPv6

input/output redirection

grep, sed, and awk