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Solution 1- wc l `ls` 2- wc l `ls` | sort bn 3- wc l `ls` | sort bn | tail n 2 4- wc
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1- wc l `ls`
2- wc l `ls` | sort bn
3- wc l `ls` | sort bn | tail n 2
4- wc -l `ls` | sort bn | tail n 2 | head n 1
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