Linux commands used by a middleware administrator
1. # free -m
> Check free memory
2. # ps -ef | grep java
> Check running process of java
3. # netstat -nulpta |grep 8002
13. # vmstat
> Command to find out ram usage command.
14. # swapinfo -tam
> check free memory on hp unix 11.31
15. # UNIX95=1 ps -ef -o vsz,ppid,pid,wchan,comm | sort -rn | head -10
> To find the biggest virtual memory consumers
16. # UNIX95= ps -e -o vsz,uid,pid,args |sort -rn | more
> Memory utilization on HP-UX
17. # dmesg -i | grep physical
> Command to check physical memory
18. # sam, # /usr/sbin/smh
> Command to check free physical memory
19. # scp -r ankur@192.168.20.64:/
> command to copy file from one machine to another
20. # df -k
> Displays, the amount of space allocated, and used for a directory.
or
# du -k >gives me the memory used of all the files inside
1. # free -m
> Check free memory
2. # ps -ef | grep java
> Check running process of java
3. # netstat -nulpta |grep 8002
tcp 0 0 fe80::9a4b:e1ff:fe6a:6:8002 :::* LISTEN 18814/java
tcp 0 0 ::ffff:192.168.20.74:8002 :::* LISTEN 18814/java
tcp 0 0 ::ffff:192.168.122.1:8002 :::* LISTEN 18814/java
tcp 0 0 fe80::9a4b:e1ff:fe6a:6:8002 :::* LISTEN 18814/java
> Check the status of a particular port
4. # uname -a
Darwin Roadrunner.local 10.3.0 Darwin Kernel Version 10.3.0: Fri Feb 26 11:58:09 PST 2010; root:xnu-1504.3.12~1/RELEASE_I386 i386
> provide the following information: the name of the kernel, network node host name (e.g., localhost.localdomain), kernel version number and release level (e.g., 2.4.20-6), kernel release date, machine hardware name, CPU (central processing unit) type, hardware platform and operating system name (e.g., GNU/Linux).
5. # getconf KERNEL_BITS, # getconf LONG_BIT, # prtconf | grep Type
> commands to find bit size of your Linux/Unix/HP-UX machine
6. # less /proc/cpuinfo
7. # grep $(printf "0x%x" $(getconf _SC_CPU_VERSION)) /usr/include/sys/unistd.h
or
# cat /opt/langtools/lib/sched.models|grep ^`uname -m|cut -c 6-`
8. # grep "processor" /proc/cpuinfo
processor : 3
> Commands to check cpu information on Linux
9. # cat /etc/redhat-release
10. # sync; echo 3 > /proc/sys/vm/drop_caches
> Command to clear cache tmp
11. # /proc/uptime
> Command to check the server uptime.
12. # /var/run/utmp
> Command to check who is currently logged.
> Check the status of a particular port
4. # uname -a
Darwin Roadrunner.local 10.3.0 Darwin Kernel Version 10.3.0: Fri Feb 26 11:58:09 PST 2010; root:xnu-1504.3.12~1/RELEASE_I386 i386
> provide the following information: the name of the kernel, network node host name (e.g., localhost.localdomain), kernel version number and release level (e.g., 2.4.20-6), kernel release date, machine hardware name, CPU (central processing unit) type, hardware platform and operating system name (e.g., GNU/Linux).
5. # getconf KERNEL_BITS, # getconf LONG_BIT, # prtconf | grep Type
> commands to find bit size of your Linux/Unix/HP-UX machine
6. # less /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 69
model name : Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
stepping : 1
microcode : 0x17
cpu MHz : 774.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
bogomips : 3591.40
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 69
model name : Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
stepping : 1
microcode : 0x17
cpu MHz : 1600.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
bogomips : 3591.40
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 69
model name : Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
stepping : 1
microcode : 0x17
cpu MHz : 800.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 2
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
bogomips : 3591.40
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 69
model name : Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
stepping : 1
microcode : 0x17
cpu MHz : 774.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 2
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
bogomips : 3591.40
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:7. # grep $(printf "0x%x" $(getconf _SC_CPU_VERSION)) /usr/include/sys/unistd.h
or
# cat /opt/langtools/lib/sched.models|grep ^`uname -m|cut -c 6-`
861 2.0 PA8000> Checking the machine
8. # grep "processor" /proc/cpuinfo
processor : 3
> Commands to check cpu information on Linux
9. # cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.8 (Tikanga)>Command to check OSversion
10. # sync; echo 3 > /proc/sys/vm/drop_caches
> Command to clear cache tmp
11. # /proc/uptime
> Command to check the server uptime.
12. # /var/run/utmp
> Command to check who is currently logged.
13. # vmstat
> Command to find out ram usage command.
14. # swapinfo -tam
> check free memory on hp unix 11.31
15. # UNIX95=1 ps -ef -o vsz,ppid,pid,wchan,comm | sort -rn | head -10
> To find the biggest virtual memory consumers
16. # UNIX95= ps -e -o vsz,uid,pid,args |sort -rn | more
> Memory utilization on HP-UX
17. # dmesg -i | grep physical
> Command to check physical memory
18. # sam, # /usr/sbin/smh
> Command to check free physical memory
19. # scp -r
> command to copy file from one machine to another
20. # df -k
> Displays, the amount of space allocated, and used for a directory.
or
# du -k >gives me the memory used of all the files inside
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