Directing to a file...

[sam]

Running program many times I noticed that

ps -p $$ -o pid,args > waiting.$$;
lockfile -1 setting
if ! cat waiting.$$ | egrep -q '[0-9]'
then
        ps -p $$ -o pid,args > check.$$
        echo "What's going on!!!"
        exit 1;
fi


sometimes it prints "What is going on". File 
waiting.1234 contains only ps-headers, that is

  PID COMMAND

while check.1234 contains

PID     COMMAND
1234    ./my_program arg1 arg2


Is this a bug?









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