Change HostName From Command Line Linux
To change the hostname, follow the steps shown below. 1. Use hostname command to Change Hostname In this example, we’ll
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Linux is an open-source operating system (OS). An operating system is software that directly manages a system’s hardware and resources, like CPU, memory, and storage. The OS sits between applications and hardware and makes the connections between all of your software and the physical resources that do the work. Here, at https://blog.eduguru.in, We will discuss and solve real-life problems coming on Linux OS. We also know more interesting features of Linux here.
TOP command in Linux
eduguru 0 Comments "(getty)")."A, 0.07) the 3 values refer to the last minute, 0.12, 1:25) users sessions logged in (3 users) average load on the system (load average: 0.02, 4%id) Percentage of the CPU processes waiting for I/O operations(0.0%wa) Percentage of the CPU serving hardware interrupts (0.3% hi — Hardware IRQ Percentage of the CPU serving software interrupts (0., 5 and 15 minutes. This line is just like the output of uptime(1). The uptime display may be toggled by the interactive l command.processesThe total number of processes running at the time of the last , a negative value can be entered, and can provide an interactive interface for manipulating processes. It can sort the tasks by CPU usage, and greatly raise the load. This command is not available in secure mode.f or FAdd fields to display or remove fields from the display. See below for more information.o or OChange order of displayed f, and lose priority. If root is running top, and memory used for buffers. The display of memory information may be toggled by the m interactive command.SwapStatistics on swap space, and the signal to send to it. For a normal kill, and the status of secure and cumulative modes.kKill a process. You will be prompted for the PID of the task, and the three load averages for the system. The load averages are the average number of process ready to run during the last 1, and the value to nice it to. Entering a positve value will cause a process to be niced to negative values, and used swap space. This and Mem are just like the output of free(1).PIDThe process ID of each task.PPIDThe parent process ID each task.UIDThe user ID of the task's owner.USERThe user name of the tas, as with kill(1), available swap space, between updates. Fractional values are recognized down to microseconds. Entering 0 causes continuous updates. The default value is 5 seconds. Note that low values cause nearly unreadably fast displays, buffers cached. On this topic you can also read the following article Following Rows — Processes list top command last row And as last thing ordered by CPU usage (as default) there are the processes c, but rather abrupt, but swapped-out tasks will only have the name of the program in parentheses (for example, but you can change that with the d command-line option or the sinteractive command."uptime"This line displays the time the system has been up, causing a process to get a higher than normal priority. The default renice value is 10. This command is not available in secure mode.SThis toggles cumulative mode, D for uninterruptible sleep, expressed as a percentage of total CPU time per processor.%MEMThe task's share of the physical memory.COMMANDThe task's command name, five minutes and 15 minutes. 2° Row – task top command 2 row The second row gives the following information: Processes running in totals (73 total) Processes running (2 running) Processes sleeping (71, for a.out processes not.SHAREThe amount of shared memory used by the task is shown in this column.STATThe state of the task is shown here. The state is either S for sleeping, free, free memory, however, i.e., in kilobytes, in seconds, including total available memory, including total swap space, iowait and idle. (Niced tasks are only those whose nice value is positive.) Time spent in niced tasks will also be counted in system and user time, is 15, is shown here. For ELF processes used library pages are counted here, is shown here.TSIZEThe code size of the task. This gives strange values for kernel processes and is broken for ELF processes.DSIZEData + Stack size. This is broken for ELF processes.TRSText resident s, it will be easier to understand the reason of excessive load and/or the slowing of the system., it will be easier to understand the reason of excessive load and/or the slowing of the system. TOP Command Options -d Specifies the delay between screen updates. You can change this with the S interac, kill, memory usage and runtime. can be better configured than the standard top from the procps suite. Most features can either be selected by an interactive command or by specifying the feature in the perso, N for a process with positive nice value, niced tasks, normal mode will make them appear less demanding than they actually are. For others, or T for stopped or traced. These states are modified by trailing < for a process with negative nice value, or undead. The processes and states display may be toggled by the t interactive command."CPU states"Shows the percentage of CPU time in user mode, R for running, send signal 15. For a sure, send signal 9. The default signal, shared memory, SIGTERM. This command is not available in secure mode.iIgnore idle and zombie processes. This is a toggle switch.IToggle between Solaris (CPU percentage divided by total number of CPUs) and Irix (CPU , sleeping, so the total will be more than 100%. The processes and states display may be toggled by the t interactive command.MemStatistics on memory usage, stopped, such as compilers, such as shells and init, system mode, that CPU times will include a process's defunct children. For some programs, the equivalent of ps -S, then top will show as many processes as will fit on the screen; this is the default.qQuit.rRe-nice a process. You will be prompted for the PID of the task, this also includes the CPU time used by the process's children which have died. You can set cumulative mode with the S command line option or toggle it with the interactive command S. The header line , this behavior is correct. In any case, TOP command in Linux, top provides an ongoing look at processor activity in real time. It displays a listing of the most CPU-intensive tasks on the system, top runs with the highest possible priority. -S Specifies cumulative mode, top will not accept command line input. It runs until it produces the number of iterations requested with the n option or until killed. Output is plain text suitable for display on a dumb terminal. FI, try cumulative mode for an alternative view of CPU use.sChange the delay between updates. You will be prompted to enter the delay time, used memory, W for a swapped out process (this does not work correctly for kernel processes).WCHANdepending on the availability of either /boot/psdatabase or the kernel link map/boot/System.map this shows the addr, where each process is listed with the CPU time that it as well as its dead children has spent. This is like the -S flag to ps(1). See the discussion below of the S interactive command.-sTells top to r, which is based on window size measurement. If 0 is specified, which will be truncated if it is too long to be displayed on one line. Tasks in memory will have a full command line, which work by forking into many separate tasks, WP"these fields from the kmem top are not supported. INTERACTIVE COMMANDS Several single-key commands are recognized while top is running. Some are disabled if the soption has been given on the comman, Z for zombies
top provides an ongoing look at processor activity in real time. It displays a listing of the most CPU-intensive tasks on
Read morefind the number of CPU cores on Linux
eduguru AMD Phenom II X6). Also, and hexa-core processors (e.g., and thus the total processor count seen by Linux is 16 (= 2 x 4 x 2)., find the number of CPU cores on Linux, How to find the number of CPU cores on Linux, including dual-core processors (e.g., Intel Core Duo), Intel Core i5), many server-grade physical machines are equipped with more than one CPU processor. To find the number of physical CPUs: $ cat /proc/cpuinfo | grep "^physical id" | sort | uniq | wc -l 2 To find the nu, Multi-core CPU processors are common nowadays, number of CPU cores on Linux, quad-core processors (e.g.
Multi-core CPU processors are common nowadays, including dual-core processors (e.g., Intel Core Duo), quad-core processors (e.g., Intel Core i5), and
Read moreWARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!
eduguru 0 Comments @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE, Add correct host key in /root/.ssh/known_hosts to get rid of this message., Host key verification failed., It is also possible that the RSA host key has just been changed., IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!, Offending key in /root/.ssh/known_hosts:1, Please contact your system administrator., RSA host key for has changed and you have requested strict checking. Host key verification failed., Someone could be eavesdropping on you right now (man-in-the-middle attack)!, The fingerprint for the RSA key sent by the remote host is, WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED
WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT
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phpmyadmin access denied for ip centos : give phpmyadmin access to ip
eduguru 0 Comments phpmyadmin access denied for ip centos : give phpmyadmin access to ip, phpmyadmin Forbidden, To enable your system to give you the login prompt please do the following: Please login to your system using putty(or anyof your favourite ssh client) go to : [root@yourserver]# vi /etc/httpd/conf.d/, You don't have permission to access /phpmyadmin on this server.
To enable your system to give you the login prompt please do the following: Please login to your system using
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linux date time set command
eduguru 0 Comments date time setting command in linux, how to set date time in libnux, linux date time set command, linux set date time, set date in centos, set date in linux, set date time in linux, set linux date time
Use the blow command to set the linux date #date 072511242014 where 07= mm (Month) 25=dd (Date) 11=hh (Hour) 24=mm
Read moreHow to find/display your MAC Address: Unix/Linux
eduguru 1 Comment broadcast, find eth0 (this is the default first Ethernet adapter) Locate the number next to the HWaddr. This is your MAC address The MAC Address will be displayed in the form of 00:08:C7:1B:8C:02. Example "ifcon, find lan0 (this is the default first Ethernet adapter) Locate the number below Address. This is your MAC address The MAC Address will be displayed in the form of 0x000E7F0D81D6 -- the leading hexadeci, find mac address, find mac address of FreeBSD/NetBSD, find mac address of linux pc, find net0 (this is the default first Ethernet adapter) Locate the number below MAC Address in use. This is your MAC address The MAC Address will be displayed in the form of 00:00:c0:88:0a:2e. Example , find the Ethernet adapter (it will probably be called le0 or ie0) Locate the number next to ether. This is your MAC address The MAC Address will be displayed in the form of 0:0:f:a1:75:a0 -- leading z, find the Ethernet adapter (it will probably be called le0 or ie0) Locate the number next to ether. This is your MAC address The MAC Address will be displayed in the form of 0:3:ba:26:1:b0 -- leading z, find the Ethernet adapter (the name changes based on the Ethernet card installed) Locate the number below Address. This is your MAC address Alternate Method Typing "/etc/nvram eaddr" should also show , find the Ethernet adapter (the name changes based on the Ethernet card installed) Locate the number below Address. This is your MAC address The MAC Address will be displayed in the form of >00:00:F, find the Ethernet adapter (the name changes based on the Ethernet card installed) Locate the number below Address. This is your MAC address The MAC Address will be displayed in the form of 00:08:c7:1b, find the Ethernet adapter (the name changes based on the Ethernet card installed) Locate the number below Address. This is your MAC address The MAC Address will be displayed in the form of 00:09:6B:51, find the Ethernet adapter (the name changes based on the Ethernet card installed) Locate the number next to the HWaddr. This is your MAC address The MAC Address will be displayed in the form of 00:08:, FreeBSD/NetBSD mac address, How to find/display your MAC Address: Unix/Linux, Linux As the root user (or user with appropriate permissions) Type "ifconfig -a" From the displayed information, mac address on linux pc, mac address on solaris, multicast> mtu 1500 inet 192.168.111.40 netmask 0xffffff00 broadcast 192.168.111.255 ether 00:08:C7:1B:8C:02 OpenBSD As the root user (or user with appropriate permissions) Type "netstat -in" From , running, simplex, the actual MAC Address would be 00:00:0f:a1:75:a0. Example "ifconfig -a" output: le0: flags=863 mtu 1500 inet 192.168.111.70 netmask ffffff00 broadcast 192.168.111.255 ether 0:0:f:a1:75:a0 AIX (IBM UN, the actual MAC Address would be 00:0E:7F:0D:81:D6. Example "lanscan" output: Hardware Station Dev Hardware Net-Interface NM Encapsulation Mjr Path Address lu State NameUnit State ID Methods Num 2.0.2 , the actual MAC Address would be00:03:ba:26:01:b0. Example "ifconfig -a" output: le0: flags=863 mtu 1500 inet 192.168.111.30 netmask ffffff00 broadcast 192.168.111.255 ether 0:3:ba:26:1:b0
Linux As the root user (or user with appropriate permissions) Type “ifconfig -a” From the displayed information, find eth0 (this
Read moreExecute root commands via PHP
eduguru 1 Comment but it needs root permission, but we have a apache user authority. I have come across a few solutions: "run apache with root user" really unsafe. I do not want to do that. "apache ALL=NOPASSWD:/sbin/service to /etc/sudoers" I trie, Execute root commands via PHP, I have a CentOS 5.7 linux server and use php5.3.x. On a pfSense system, I have written some php code to execute shell commands. For example, to restart the sshd service: and I tried to execute that command via exec function, you can restart services-that required root permissions using a php web page. I'm trying to do something similar
I have a CentOS 5.7 linux server and use php5.3.x. On a pfSense system, you can restart services-that required root
Read more centos add and remove new user
eduguru 0 Comments centos add and remove new user, centos add new user, centos remove new user, How to Delete a User Should you find that you find that you no longer want to have a specific user on the virtual private server you can delete them with a single command. sudo userdel newuser You can, To add a user to the system: Issue the useradd command to create a locked user account: useradd Unlock the account by issuing the passwd command to assign a password and set password aging guidelines:
To add a user to the system: Issue the useradd command to create a locked user account: useradd Unlock the account by
Read more#1153 – Got a packet bigger than ‘max_allowed_packet’ bytes
eduguru 1 Comment #1153 - Got a packet bigger than 'max_allowed_packet' bytes, 2006 - ERROR 1153 (08S01) at line 1752: Got a packet bigger than 'max_allowed_packet' bytes. I try to experiment under the documentation like: Phpmyadmin Got A Packet Bigger Than 'max_Allowed_Packet' , 2008 - mysql foo < foo.sql ERROR 1153 (08S01) at line 96: Got a packet bigger than 'max_allowed_packet' bytes. Apparently there are attachments in ... MYSQL - Got a packet bigger than �, 2010 - #1153 - Got a packet bigger than 'max_allowed_packet' bytes. Ive never had an error like this before. Im my local environment I have php.ini ... cannot upload backup DB to Media Temple (dv) 20 , 2011 - ERROR 1153: Got a packet bigger than 'max_allowed_packet' bytes. Fortunately help was at hand via this forum post. All I needed to do was ... phpmyadmin error : #1153 - Got a packet bigger than, 2011 - Error: MySQL - ERROR 1153 (08S01) at line 138: Got a packet bigger than 'max_allowed_packet' bytes. You see the following error while ... Searches related to #1153 - Got a packet bigger than 'm, 2012 - 3 posts - 2 authors However i keep getting this error:#1153 - Got a packet bigger than 'max_allowed_packet' bytesI've contacted my host and they've said phps ... Solución al error 1153 Got a p, 2013 - phpmyadmin- Got a packet bigger than 'max_allowed_packet' bytes ... 2) Set value max_allowed_packet=128M under attribute [mysqld] MySQL - Got a packet bigger than 'max_allowed_packet' bytes ..., Login to mysql and run the below command: set global net_buffer_length=1000000; set global max_allowed_packet=1000000000;, my sql error Got a packet bigger than 'max_allowed_packet' bytes, MySQL Error 1153 - Got a packet bigger than ... stackoverflow.com/.../mysql-error-1153-got-a-packet-bigger-than-max-a... Sep 18
Login to mysql and run the below command: set global net_buffer_length=1000000; set global max_allowed_packet=1000000000;
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