log_walker$(nW)TEST0: START: log_walker
$(nW)log_walker$(nW) $(nW)testfile1
append str[0] 1st append string
append str[1] 2nd append string
append str[2] 3rd append string
append str[3] 4th append string
append str[4] 5th append string
append str[5] 6th append string
signal: Segmentation fault
log_walker$(nW)TEST0: DONE