25 lines
		
	
	
	
		
			360 B
		
	
	
	
		
			Bash
		
	
	
	
	
	
			
		
		
	
	
			25 lines
		
	
	
	
		
			360 B
		
	
	
	
		
			Bash
		
	
	
	
	
	
#! /bin/bash
 | 
						|
 | 
						|
i=0
 | 
						|
while [ $i -lt  $1 ]
 | 
						|
do
 | 
						|
    /bin/sh -c "sleep 4; exit 0" &
 | 
						|
    rv=$?
 | 
						|
    pid=$!
 | 
						|
    eval bg_pid_$i=$pid
 | 
						|
    echo $$: Job $i: pid is $pid rv=$rv
 | 
						|
    i=$((i + 1))
 | 
						|
done
 | 
						|
 | 
						|
 | 
						|
 | 
						|
i=0
 | 
						|
while [ $i -lt $1 ]
 | 
						|
do
 | 
						|
    eval wpid=\$bg_pid_$i
 | 
						|
    echo Waiting for job $i '('pid $wpid')'
 | 
						|
    wait $wpid
 | 
						|
    rv=$?
 | 
						|
    echo Return value is $rv
 | 
						|
    i=$((i + 1))
 | 
						|
done
 |