Linux - Top command to list specific process, Monitor all the process with specific name

Top command to list specific process

As a linux admin we will monitor only a specific process with specific name. Normally system admins use ps, pgrep command to find the process using particular command. In such situation to grep the process with specific name you can use the top command along with pgrep to grep only specific process or to monitor the specific process what it does.
 # top -p $(pgrep  -d , chrome)

 # top '-p' $(pgrep  -d ' -p ' chrome) 
OUTPUT:
 Tasks:  10 total,   0 running,   7 sleeping,   0 stopped,   3 zombie
 Cpu(s):  6.2%us,  4.5%sy,  0.0%ni, 87.3%id,  0.0%wa,  2.1%hi,  0.0%si,  0.0%st
 Mem:   1801632k total,   577512k used,  1224120k free,    24952k buffers
 Swap:  4195324k total,   177992k used,  4017332k free,   222220k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND 
 1806 vaishnav  20   0  347m  53m  22m S  0.0  3.0   1:30.39 chrome
 1813 vaishnav  20   0  121m 1408  948 S  0.0  0.1   0:00.87 chrome 
 1815 vaishnav  20   0  102m 1224  880 S  0.0  0.1   0:00.02 chrome 
 2120 vaishnav  20   0     0    0    0 Z  0.0  0.0   0:32.41 chrome <defunct>
 2122 vaishnav  20   0     0    0    0 Z  0.0  0.0   0:01.14 chrome <defunct>
 2210 vaishnav  20   0  175m  29m  15m S  0.0  1.7   0:02.16 chrome
 2236 vaishnav  20   0  221m  71m  19m S  0.0  4.1   0:28.59 chrome  
 2257 vaishnav  20   0     0    0    0 Z  0.0  0.0   0:00.28 chrome <defunct>
 2279 vaishnav  20   0  180m  38m  16m S  0.0  2.2   0:02.04 chrome
 2320 vaishnav  20   0  173m  27m  16m S  0.0  1.6   0:02.06 chrome 

To be more specific about the process or the process with the command what it does? you can use the below command
 # top -p $(pgrep  -d , chrome) -c
Sample Output
 1815 vaishnav  20   0  102m 1224  880 S  0.0  0.1   0:00.02 /opt/google/chrome/chrome --type=zygote
 2120 vaishnav  20   0     0    0    0 Z  0.0  0.0   0:32.41 [chrome] <defunct>
 2122 vaishnav  20   0     0    0    0 Z  0.0  0.0   0:01.14 [chrome] <defunct>

The topic on Linux - Top command to list specific process is posted by - Math

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