grep '&;root&;' /etc/paswd cut -d: -f1 /etc/passwd cut -d: -c1-3 /etc/passwd grep '&;root&;' /etc/passwd | cut -d: -f1 cut -d: -f1 /etc/passwd | grep '&;root&;' tail -f /var/log cat grep aaaa sort -t: +2 -n /etc/passwd sort -t: +2 -r /etc/passwd du | sort -n -r | head -n -3 du | sort -n -r | head -n -3 | cut -f2 wc /etc/passwd wc -l -w -c /etc/passwd uniq diff patch -p0 < patch.2.6.9 ^ . * $ a{18} /usr/share/dict/words grep '.{40,}' /usr/share/dict/words i18n grep '^i.{18}n$' /usr/share/dict/words grep -v '^#' /etc/squid/squid.conf | grep -v '^$'|wc -l vi %s/word/world/g %s//word/world/g (编辑:李大同)
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