=================== Some Basic AIX Commands ===============================
To Check physical memory utilization
#svmon -G
#vmstat
To see unsuccessful count
#lsuser username
To
reset the password after password change
#pwdadm
–c username
To remove unsuccessful attempts
#chuser unsuccessful_login_count=0 username
To see CPU information
#sar -u
To see process and utilization
#topas
=======================LVM commands in AIX =======================
#mkvg -y vgname -s pvname
#mklv -y lvname -t jfs2 vgname `no. of LPs pvname
#lslv
#lsvg
#crfs -v jfs2 -d /dev/lvname -m filesystem name
To extend mountpoint
#chfs -a size=+50G filesystemname
=================Some Linux Basic Commands ==================
To see swap/Memory information
#free -m
To see unsuccessful count
#pam_tally2 --user=username
To remove unsuccessful attempts
#pam_tally2 --user=username --reset
To see CPU information
#lscpu
====To give sudo access======
(Add entry in /etc/sudoers file)
useradd
–m –g dba -c “Rami Singh” -s /bin/bash rsingh
username
ALL=(ALL) /usr/bin/su -
Userdd commands parameters -
-m creating home directory
-g to assign to primary group
-c to define values in captions
-s to define shell
-G to secondary groups
To set as password change prompt for first login
#chage -d 0 username
To see user password expiry date details
#chage -l username
==================================
For Patching in Linux - ======================
To removes the cache of repositories which are
enabled in /etc/yum.repos.d/*.repo.
#yum clean all
To
check update required patches
#yum
check-update
To
install single package
#yum
install packagename
To
see package details
#yum
info packagename
To
check repolist count
#yum
repolist
To
update all patches
#yum
update
To
check last updated details
#yum history
To
remove recently update package
#yum
undo trans ID
=========Check Swap space Utilization ========
Check Swap Space
#vmstat
#vmstat 1 10
#swapon -s
#cat /proc/swaps
========Check CPU Utilization =========
#top
#sar -u 1 10
#ps -Ao user,uid,comm,pid,pcpu,tty --sort=-pcpu | head -n 10
#ps -eo pid,ppid,cmd,%cpu,%mem --sort=-%cpu | head
#ps aux | sort -nrk 3,3 | head -n 10
===How to Check how long-time process is running ================
#ps -C rsyslogd -o pid,cmd,start,etimes,etime
#ps -aux | grep rsyslog
#ps -p 1122 -o etime (where 1122 is PID for rsyslogd)
#ps -p 1122 -o pid,cmd,etime,uid,gid
============Check Disk space ============
#df -h
#du -sh /syslog
#du -x -h -a /syslog | sort -r -h | head .
Check only GB in file size
#du -sh * | G
