=========================
script
=========================
#!/bin/bash

time=600
members=`asterisk -rx "queue show 1" | grep -a Local | sed 's/^[ \t]*//'| cut -d" " -f 1,10`




echo "Noop $members"

#for i in $members; do
	if (( "${members:10}" >= "${time}" )); then
		echo "overtime"
	fi

============================
output
===========================

[root@localhost home]# bash -x ./agent-logoff.sh                                + $'\rtime=600'
time=600: command not found
++ asterisk -rx 'queue show 1'
++ grep -a Local
++ sed 's/^[ \t]*//'
++ cut '-d ' -f 1,10
' members='Local/555 7333
' echo 'Noop Local/555 7333
Noop Local/555 7333
 >=   ))33
./agent-logoff.sh: line 10: /usr/share/locale/en_US.UTF-8.utf8/LC_MESSAGES/bash. >=  : syntax error: operand expected (error token is ">=  ")