To know the version 32 or 64
#uname -a
#uname -m
#cat /etc/redhat-release //to know os version
#cat /etc/issue
------------------------------------------------------------
If you want to kill the task just
#kill 17552
------------------------------------------------------------
To know memory usage
#cat /proc/meminfo
#less /proc/meminfo
#free
#free -h
#free -t
#free -k ##kil0bytes -m ## megabytes -g ##gegabytes
#free -t -m
#free -c 5 -s 1
------------------------------------------------------------
To know hard disk
#df
#df -h
#fdisk -l | grep Disk
#fdisk -h
------------------------------------------------------------
#top // to know tasks
#htop // to know detailed task, it fails then #yum install htop
------------------------------------------------------------
#vmstat
#vmstat -s
#dmidecode --type memory
------------------------------------------------------------
#mtr google.com //combining the functionality of ping and traceroute, if fails #yum install mtr
------------------------------------------------------------
#ssh -X root@192.168.0.1 //log-in to the remote linux host
#ss //it showing ssh connected details
# ss
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 52 192.168.1.7:ssh 192.168.1.91:64672
ESTAB 0 840 192.168.1.7:ssh 121.18.238.109:34449
------------------------------------------------------------
#w //to show system up date
------------------------------------------------------------
#cat /etc/passwd //to show all users
------------------------------------------------------------
#netstat -tuplen //to know active internet connection Listen only (service and their open ports)
#netstat -antp //showing all listen as well established connections with ip
------------------------------------------------------------
# netstat -ntlp //find working ports
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:199 0.0.0.0:* LISTEN 1635/snmpd
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1802/mysqld
tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN 1331/redis-server
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1652/sshd
tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN 1914/ntop
tcp 0 0 0.0.0.0:3001 0.0.0.0:* LISTEN 1914/ntop
tcp 0 0 :::80 :::* LISTEN 1933/httpd
tcp 0 0 :::22 :::* LISTEN 1652/sshd
------------------------------------------------------------
#ssh -l root 192.168.1.90 //to get ssh on another machine
------------------------------------------------------------
To know yum installed list
# yum list installed | grep mysql
------------------------------------------------------------
To know yum task
#ps -ef | grep yum
#ps -ef | grep apache //apache tast
#ps -ef | grep root //root task
#ps -aux
#rpm -qa | grep //installed rpm packs
------------------------------------------------------------
To list running services
# service --status-all
# service --status-all | grep httpd
# service --status-all | less
[root@sms ~]# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 12
On-line CPU(s) list: 0-11
Thread(s) per core: 2
Core(s) per socket: 6
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 45
Stepping: 7
CPU MHz: 1200.000
BogoMIPS: 4000.32
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 15360K
NUMA node0 CPU(s): 0-11
mysql>select * from mysql.user /G;
------------------------------------------------------------
#php -v
#httpd -v
#mysql -V
#mysqld -V
------------------------------------------------------------
transfer files from one host to another host
#scp /var/www/html/myfile root@192.168.1.4:/root/Download/
copy file to the server run the following on your host
#scp -r /root/bin/ root@192.168.1.1:
copy file from server run the following on you host
#scp -r root@192.168.1.1:/root/bin/
------------------------------------------------------------
#tail poller.php /// show last 10 lines
#cat poller.php | grep keyword
#cat poller.php | grep keyword --color
------------------------------------------------------------
#uname -a
#uname -m
# uname -mrs
Linux 2.6.32-504.3.3.el6.x86_64 x86_64
------------------------------------------------------------#cat /etc/redhat-release //to know os version
#cat /etc/issue
------------------------------------------------------------
If you want to kill the task just
#kill 17552
------------------------------------------------------------
To know memory usage
#cat /proc/meminfo
#less /proc/meminfo
#free
#free -h
#free -t
#free -k ##kil0bytes -m ## megabytes -g ##gegabytes
#free -t -m
#free -c 5 -s 1
------------------------------------------------------------
To know hard disk
#df
#df -h
#fdisk -l | grep Disk
#fdisk -h
------------------------------------------------------------
#top // to know tasks
#htop // to know detailed task, it fails then #yum install htop
------------------------------------------------------------
#vmstat
#vmstat -s
#dmidecode --type memory
------------------------------------------------------------
#mtr google.com //combining the functionality of ping and traceroute, if fails #yum install mtr
------------------------------------------------------------
#ssh -X root@192.168.0.1 //log-in to the remote linux host
#ss //it showing ssh connected details
# ss
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 52 192.168.1.7:ssh 192.168.1.91:64672
ESTAB 0 840 192.168.1.7:ssh 121.18.238.109:34449
------------------------------------------------------------
#last //show history of last logged user
------------------------------------------------------------
#curl google.com //show external IP address
------------------------------------------------------------
#tree
#pstree //showing tree structure
------------------------------------------------------------
#sudo gedit------------------------------------------------------------
#w //to show system up date
------------------------------------------------------------
#cat /etc/passwd //to show all users
------------------------------------------------------------
#netstat -tuplen //to know active internet connection Listen only (service and their open ports)
#netstat -antp //showing all listen as well established connections with ip
------------------------------------------------------------
# netstat -ntlp //find working ports
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:199 0.0.0.0:* LISTEN 1635/snmpd
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1802/mysqld
tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN 1331/redis-server
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1652/sshd
tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN 1914/ntop
tcp 0 0 0.0.0.0:3001 0.0.0.0:* LISTEN 1914/ntop
tcp 0 0 :::80 :::* LISTEN 1933/httpd
tcp 0 0 :::22 :::* LISTEN 1652/sshd
------------------------------------------------------------
#unrar x sc.rar //to unzip the file------------------------------------------------------------
#ssh -l root 192.168.1.90 //to get ssh on another machine
------------------------------------------------------------
To know yum installed list
# yum list installed | grep mysql
------------------------------------------------------------
To know yum task
#ps -ef | grep yum
#ps -ef | grep apache //apache tast
#ps -ef | grep root //root task
#ps -aux
#rpm -qa | grep //installed rpm packs
------------------------------------------------------------
To list running services
# service --status-all
# service --status-all | grep httpd
# service --status-all | less
# service httpd status // to print the status of service
# chkconfig --list //chkconfig service list
#chkconfig iptables --list
#chkconfig iptables --list
------------------------------------------------------------
Linux Hardware Info command[root@sms ~]# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 12
On-line CPU(s) list: 0-11
Thread(s) per core: 2
Core(s) per socket: 6
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 45
Stepping: 7
CPU MHz: 1200.000
BogoMIPS: 4000.32
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 15360K
NUMA node0 CPU(s): 0-11
------------------------------------------------------------
# cat /proc/cpuinfo
cat: /proc/cpuinfocat: No such file or directory
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU E5606 @ 2.13GHz
stepping : 2
microcode : 20
cpu MHz : 2133.460
cache size : 8192 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc up arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm arat epb dtherm
bogomips : 4266.92
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
------------------------------------------------------------
# cat /proc/meminfo
MemTotal: 1020020 kB
MemFree: 172756 kB
Buffers: 71772 kB
Cached: 440696 kB
SwapCached: 2612 kB
Active: 266076 kB
Inactive: 440272 kB
Active(anon): 8224 kB
Inactive(anon): 190372 kB
Active(file): 257852 kB
Inactive(file): 249900 kB
Unevictable: 0 kB
------------------------------------------------------------
# cat /proc/cpuinfo
cat: /proc/cpuinfocat: No such file or directory
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU E5606 @ 2.13GHz
stepping : 2
microcode : 20
cpu MHz : 2133.460
cache size : 8192 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc up arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm arat epb dtherm
bogomips : 4266.92
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
------------------------------------------------------------
# cat /proc/meminfo
MemTotal: 1020020 kB
MemFree: 172756 kB
Buffers: 71772 kB
Cached: 440696 kB
SwapCached: 2612 kB
Active: 266076 kB
Inactive: 440272 kB
Active(anon): 8224 kB
Inactive(anon): 190372 kB
Active(file): 257852 kB
Inactive(file): 249900 kB
Unevictable: 0 kB
------------------------------------------------------------
[root@sms ~]# lsb_release -a
LSB Version: :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS release 6.6 (Final)
Release: 6.6
Codename: Final
------------------------------------------------------------
find mysql users listmysql>select * from mysql.user /G;
------------------------------------------------------------
#php -v
#httpd -v
#mysql -V
#mysqld -V
------------------------------------------------------------
transfer files from one host to another host
#scp /var/www/html/myfile root@192.168.1.4:/root/Download/
copy file to the server run the following on your host
#scp -r /root/bin/ root@192.168.1.1:
copy file from server run the following on you host
#scp -r root@192.168.1.1:/root/bin/
------------------------------------------------------------
#tail poller.php /// show last 10 lines
#cat poller.php | grep keyword
#cat poller.php | grep keyword --color
------------------------------------------------------------
#history //show all commands you have used recently
#man ssh //general help it showing manuals of anything
------------------------------------------------------------
#find / -name subject
# find / -name elasticsearch.yml //search the file or anything in the machine
# locate libmysqlclient
#find {/etc,/usr,/var} -iname "classification.config"
-------------------------------------------------------------
# yum repolist //list all added repository lists
yum --disablerepo=* --enablerepo=epel list //list epel packages
-------------------------------------------------------------
#man username
#useradd username
#passwd username
#cat /etc/passwd (or) #more /etc/passwd
#groupadd groupname
#cat /etc/group
#usermod -G groupname username
#groupdel groupname
#userdel username
#man ssh //general help it showing manuals of anything
------------------------------------------------------------
#find / -name subject
# find / -name elasticsearch.yml //search the file or anything in the machine
# locate libmysqlclient
#find {/etc,/usr,/var} -iname "classification.config"
-------------------------------------------------------------
# yum repolist //list all added repository lists
yum --disablerepo=* --enablerepo=epel list //list epel packages
-------------------------------------------------------------
#man username
#useradd username
#passwd username
#cat /etc/passwd (or) #more /etc/passwd
#groupadd groupname
#cat /etc/group
#usermod -G groupname username
#groupdel groupname
#userdel username
-------------------------------------------------------------
#cp * /var/www/html/test/
-------------------------------------------------------------
#du - disk usage
[root@mail ~]# du -ha --time /home/
12K 2017-08-05 00:46 /home/ttadmin/.local/share/applications
0 2017-08-05 00:46 /home/ttadmin/.local/share/.converted-launchers
16K 2017-08-05 00:46 /home/ttadmin/.local/share
20K 2017-08-05 00:46 /home/ttadmin/.local
4.0K 2010-08-18 21:14 /home/ttadmin/.mozilla/plugins
4.0K 2010-08-18 21:14 /home/ttadmin/.mozilla/extensions
12K 2013-11-29 22:01 /home/ttadmin/.mozilla
592K 2017-08-09 16:51 /home/ttadmin
596K 2017-08-09 16:51 /home/
#cp * /var/www/html/test/
-------------------------------------------------------------
#du - disk usage
[root@mail ~]# du -ha --time /home/
12K 2017-08-05 00:46 /home/ttadmin/.local/share/applications
0 2017-08-05 00:46 /home/ttadmin/.local/share/.converted-launchers
16K 2017-08-05 00:46 /home/ttadmin/.local/share
20K 2017-08-05 00:46 /home/ttadmin/.local
4.0K 2010-08-18 21:14 /home/ttadmin/.mozilla/plugins
4.0K 2010-08-18 21:14 /home/ttadmin/.mozilla/extensions
12K 2013-11-29 22:01 /home/ttadmin/.mozilla
592K 2017-08-09 16:51 /home/ttadmin
596K 2017-08-09 16:51 /home/
[root@mail ~]# du -ch /home/
4.0K /home/ttadmin/.mozilla/extensions
12K /home/ttadmin/.mozilla
592K /home/ttadmin
596K /home/
596K total
[root@mail ~]# du -sh /home/
596K /home/
[root@mail ~]# du -mh /home/
20K /home/ttadmin/.local
4.0K /home/ttadmin/.mozilla/plugins
4.0K /home/ttadmin/.mozilla/extensions
12K /home/ttadmin/.mozilla
592K /home/ttadmin
596K /home/
[root@mail ~]# du -ah /home/
12K /home/ttadmin/.mozilla
592K /home/ttadmin
596K /home/
[root@mail ~]# du -h /home/
12K /home/ttadmin/.mozilla
592K /home/ttadmin
596K /home/
[root@mail ~]# du /home/
12 /home/ttadmin/.mozilla
592 /home/ttadmin
596 /home/
-------------------------------------------------------------
No comments:
Post a Comment