When i use `` to invoke shell commmand, sometimes perl will failed with Argument list too long.
For example, i use 
my $dir = "/slowfs/hspice01/liguoj/performance/MT4/Rundir/Mon/RHEL4";
my $begin_load = `cat /proc/loadavg`; 
my $space = `df $dir`;

[download]
following error info appear:
Can't exec "df": Argument list too long at /slowfs/hspice01/liguoj/workshop/bin/../lib/Runcases.pm line 365.
Can't exec "cat": Argument list too long at .....
The failed issue will not always appear.

In reply to invoke shell with `` failed by jiangliguo

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