Ubuntu Find Process by Name

ps -fC name

UID        PID  PPID  C STIME TTY          TIME CMD
root      1211     1  0 May19 ?        00:00:00 nginx: master process /usr/sbin/
www-data  1212  1211  0 May19 ?        00:00:14 nginx: worker process
www-data  1213  1211  0 May19 ?        00:00:00 nginx: worker process

ps aux | grep name

root      1211  0.0  0.0 130760    36 ?        Ss   May19   0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
www-data  1212  0.0  0.0 130760  1048 ?        S    May19   0:14 nginx: worker process
www-data  1213  0.0  0.0 130760  1048 ?        S    May19   0:00 nginx: worker process
luaz     22158  0.0  0.0  17184  1020 pts/3    S+   20:05   0:00 grep --color=auto nginx

pgrep nginx

1211
1212
1213