For example, if you had a batch file called stuff.bat and you typed stuff a b c d at the command prompt, the letters a, b, c, and d would be assigned to the variables %1, %2, %3, and %4, respectively.
Fiberglass shingles generally have a longer life expectancy than do asphalt shingles. Properly installed tiled roofs have a normal useful life of 20-30 years or longer, but individual pieces can become cracked or broken or the nails rust out.
Your house. The aforementioned Study of Life Expectancy of Home Components report states that a typical roof made of asphalt shingles should last about 20 years. Roofs made of fiber cement shingles should last 25 years, and roofs made of wood shakes are typically good for 30 years.our house. The aforementioned Study of Life Expectancy of Home Components report states that a typical roof made of asphalt shingles should last about 20 years. Roofs made of fiber cement shingles should last 25 years, and roofs made of wood shakes are typically good for 30 years.