vlada :
I need bash script to count processes of SPECIFIC users or all users. We can enter 0, 1 or more arguments. For example
./myScript.sh root deamon
should execute like this:
root 92
deamon 8
2 users has total processes: 100
If nothing is entered as parameter, then all users should be listed:
uuidd 1
awkd 2
daemon 1
root 210
kklmn 6
5 users has total processes: 220
What I have till now is script for all users, and it works fine (with some warnings). I just need part where arguments are entered (some kind of filter results). Here is script for all users:
cntp = 0 #process counter
cntu = 0 #user counter
ps aux |
awk 'NR>1{tot[$1]++; cntp++}
END{for(id in tot){printf "%s\t%4d\n",id,tot[id]; cntu++}
printf "%4d users has total processes:%4d\n", cntu, cntp}'
Freddy :
#!/bin/bash
users=$@
args=()
if [ $# -eq 0 ]; then
# all processes
args+=(ax)
else
# user processes, comma-separated list of users
args+=(-u${users// /,})
fi
# print the user field without header
args+=(-ouser=)
ps "${args[@]}" | awk '
{ tot[$1]++ }
END{ for(id in tot){ printf "%s\t%4d\n", id, tot[id]; cntu++ }
printf "%4d users has total processes:%4d\n", cntu, NR}'
The ps
arguments are stored in array args
and list either all processes with ax
or user processes in the form -uuser1,user2
and -ouser=
only lists the user field without header.
In the awk
script I only removed the NR>1
test and variable cntp
which can be replaced by NR
.
Possible invocations:
./myScript.sh
./myScript.sh root daemon
./myScript.sh root,daemon