#!/bin/bash
# 1 #
grep toto * 2> /dev/null | wc -l
# 2 #
head -n 100 /Users/edouard/script.sh | grep sudo | wc -l
# 3 #
ls -lt | head -n 4 | tail -n 1
# 4 #
cat fichier | tr -C -d "aeiouy" | wc -m
# 5 #
# 8 #
find .. -name '*.o' -type f -print 2> /dev/null
# 9 #

