I would like to have some help writing a script (which should works on freebsd where I have sh as default) that should grab a precise character when I do a "ps ax | grep" command from the terminal. For example :
# ps ax | grep bhyve
12098 - Is 0:00.00 bhyve: system.pwd (bhyve)
12099 - Is 0:00.00 bhyve: system.grp (bhyve)
12093 1 IC+ 25:11.49 bhyve: vm4 (bhyve)
12557 0 S+ 0:00.00 grep bhyve
it should returns 4. The command below returns the wrong values :
# ps ax | awk '/bhyve: vm/{print $6}'
vm4
/bhyve:
for sure I don't need that it returns /bhyve: !
AND :
# ps ax | grep vnc
12105 1 S+ 0:00.04 vncviewer 0:4
12642 0 S+ 0:00.00 grep vnc
it should be 4,but the command below returns also the wrong values :
# ps ax | awk '/vncviewer 0/{print $6}'
0:4
/vncviewer
even here,it returns /vncviewer. I don't want that.
the solution proposed worked in this way :
# ps ax | awk '/vncviewer [0]/{print $6}'
0:4
# ps ax | awk '/bhyve: [0]/{print $6}'
0:4
