054.查找指定目录下最大的文件

例：查找/usr下最大的文件 1 .首先想到的是du命令 [root @cdn ~]# du -sh /usr/*|sort -rn|head 657M /usr/local 591M /usr/lib 499M /usr/lib64 201M /usr/bin 110M /usr/include 55M /usr/libexec 47M /usr/src 22M /usr/sbin 8 .0K /usr/etc 4 .0K /usr/games 从结果中可以看出，最大的是一个目录，显然此命令不行。 2 .再然后想到ls [root @cdn ~]# ls -lSh /usr/* |head lrwxrwxrwx. 1 root root 10 May 28 13 : 15 /usr/tmp -> ../var/tmp /usr/lib64: total 275M -rwxr-xr-x 1 root root 47M Dec 7 2011 libgcj.so. 10.0 . 0 -rwxr-xr-x. 1 root root 41M Dec 8 2011 libwireshark.so. 0.0 . 1 -rwxr-xr-x. 1 root root 16M Nov 12 2010 libicudata.so. 42.1 -rwxr-xr-x 1 root root 11M Sep 26 2011 libQtGui.so. 4.6 . 2 -rwxr-xr-x 1 root root 7 .6M Feb 3 2012 libgs.so. 8.70 -rwxr-xr-x 1 root root 6 .9M Sep 26 2011 libQtDesigner.so. 4.6 . 2 用find命令查找大于47M的文件 [root @cdn ~]# find /usr/ -size +47M -print /usr/local/java/jre/lib/rt.jar /usr/lib/locale/locale-archive 因此，此命令也不行 3 .结合find、ls、du [root @cdn ~]# find /usr/ -name `ls -lR /usr|sort -k 5 -rn|head - 1 |awk '{print $NF}' ` /usr/lib/locale/locale-archive [root @cdn ~]# du -sh `find /usr/ -name \`ls -lR /usr|sort -k 5 -rn|head - 1 |awk '{print $NF}' \`` 95M /usr/lib/locale/locale-archive [root @cdn ~]# find /usr/ -type f |xargs du -sk|sort -rn|head - 1 96796 /usr/lib/locale/locale-archive