Linux下find命令在目錄結構中搜索文件，並執行指定的操作。Linux下find命令提供了相當多的查找文件，功能很強大。由於find具有強大的功能，所以它的選項也很多，需要我們花時間來了解。
命令格式：
find pathname -options [-print -exec -ok ...]命令功能：用於在文件樹種查找文件，並作出相應的處理（可能訪問磁盤）
命令參數：
pathname: find命令所查找的目錄路徑。例如用.來表示當前目錄，用/來表示系統根目錄。
-print： find命令將匹配的文件輸出到標准輸出。
-exec： find命令對匹配的文件執行該參數所給出的shell命令。相應命令的形式為'command' { } \;，注意{ }和\；之間的空格。
-ok： 和-exec的作用相同，只不過以一種更為安全的模式來執行該參數所給出的shell命令，在執行 每一個命令之前，都會給出提示，讓用戶來確定是否執行。 #-print 將查找到的文件輸出到標准輸出
#-exec command {} \; —–將查到的文件執行command操作,{} 和 \;之間有空格
#-ok 和-exec相同，只不過在操作前要詢用戶
執行命令操作時，我先在Linux中建立一個name文件。
[ningning@bogon ~]$ mkdir name [ningning@bogon ~]$ ls Desktop Documents Downloads Music name Pictures Public Templates Videos-name 按照文件名來查找文件。
[ningning@bogon ~]$ ls Desktop Documents Downloads Music name Pictures Public Templates Videos [ningning@bogon ~]$ find -name name //查找文件名為name的文件 ./name [ningning@bogon ~]$ find . -name "*.txt" -print //在當前目錄查找.txt文件並顯示 ./test.txt [ningning@bogon ~]$ find ~ -name "*.xml" -print //在$ HOME中查找.xml文件並顯示 /home/ningning/.gconf/desktop/%gconf.xml /home/ningning/.gconf/desktop/gnome/accessibility/%gconf.xml /home/ningning/.gconf/desktop/gnome/accessibility/keyboard/%gconf.xml /home/ningning/.gconf/desktop/gnome/%gconf.xml /home/ningning/.gconf/apps/nautilus/%gconf.xml [ningning@bogon ~]$ find -name "[A-Z]*" -print //查找以大寫字母開頭的文件 ./Downloads ./.gconf/apps/gnome-terminal/profiles/Default ./Templates ./Documents ./Music ./Pictures ./Public ./Videos ./Desktop [ningning@bogon ~]$ find -name "P*" -print //查找以大寫字母P開頭的文件 ./Pictures ./Public [ningning@bogon ~]$ find -name "*s" -print //查找以小寫字母s結尾的文件 ./.xsession-errors ./.gvfs ./.gnome2/keyrings ./.gnome2/panel2.d/default/launchers ./.gnome2/nautilus-scripts ./.dbus ./.dbus/session-bus ./.gnote/addins ./.mozilla/plugins ./.mozilla/extensions ./Downloads ./.gtk-bookmarks ./.local/share/applications ./.local/share/.converted-launchers ./.nautilus ./.gconf/apps ./Templates ./Documents ./Pictures ./Videos [ningning@bogon ~]$ find -name "[a-z]*" -print //查找以小寫字母開頭的文件 ./.gnome2/keyrings ./.gnome2/keyrings/login.keyring ./.dbus/session-bus ./.dbus/session-bus/dcd26acd87eabb5cc6f2133500000028-0 ./.gnote/addins ./.mozilla/plugins ./.mozilla/extensions ./.gnupg/pubring.gpg ./.cache/event-sound-cache.tdb.dcd26acd87eabb5cc6f2133500000028.i386-redhat-linux-gnu ./.pulse/dcd26acd87eabb5cc6f2133500000028-card-database.tdb ./name ./.gconf/desktop ./.gconf/desktop/gnome ./.gconf/desktop/gnome/accessibility-perm 按照文件的權限來查找文件
[ningning@bogon ~]$ find . -perm 755 -print //查找權限755的文件
./.gnome2
./.gnome2/nautilus-scripts
./.fontconfig
./.mozilla
./.mozilla/plugins
./.mozilla/extensions
./Downloads
./.cache
./.local
./.local/share
./.local/share/applications
./.nautilus
./.config
./.config/gnome-session
./.config/gnome-session/saved-session
./.config/gnome-disk-utility
./.config/gnome-disk-utility/ata-smart-ignore
./Templates
./Documents
./Music
./Pictures
./Public
./Videos
./Desktop
//注意ok和exec的用法
[ningning@bogon ~]$ find -perm -007 -ok -l{} \; // #查所有用戶都可讀寫執行的文件同-perm 777
< -l{} ... ./.pulse/dcd26acd87eabb5cc6f2133500000028-runtime > ? y
find: `-l./.pulse/dcd26acd87eabb5cc6f2133500000028-runtime': No such file or directory
[ningning@bogon ~]$ find -perm -007 -exec -l{} \;
find: `-l./.pulse/dcd26acd87eabb5cc6f2133500000028-runtime': No such file or directory-user 按照文件屬主來查找文件[ningning@bogon ~]$ find / -user ningning /proc/14301/task/14301/cwd /proc/14301/task/14301/root /proc/14301/task/14301/exe /proc/14301/task/14301/mounts /proc/14301/task/14301/mountinfo /proc/14301/task/14301/clear_refs /proc/14301/task/14301/smaps /proc/14301/task/14301/pagemap /proc/14301/task/14301/attr /proc/14301/task/14301/attr/current /proc/14301/task/14301/attr/prev /proc/14301/task/14301/attr/exec /proc/14301/task/14301/attr/fscreate /proc/14301/task/14301/attr/keycreate /proc/14301/task/14301/attr/sockcreate /proc/14301/task/14301/wchan /proc/14301/task/14301/stack /proc/14301/task/14301-group 按照文件所屬的組來查找文件
find: `/proc/27825/fd/5': No such file or directory /proc/27825/fdinfo /proc/27825/fdinfo/0 /proc/27825/fdinfo/1 /proc/27825/fdinfo/2 /proc/27825/fdinfo/3 /proc/27825/fdinfo/4 find: `/proc/27825/fdinfo/5': No such file or directory /proc/27825/ns /proc/27825/ns/net /proc/27825/ns/uts /proc/27825/ns/ipc /proc/27825/ns/mnt /proc/27825/ns/pid /proc/27825/net /proc/27825/environ /proc/27825/auxvfind /home -nouser 列出/home內不屬於本地用戶的文件或目錄find /home -nogroup 列出/home內不屬於本地組的文件或目錄
find /home -used -2 列出文件或目錄被改動過之後，在2日內被存取過的文件或目錄
find /home -user cnscn 列出/home目錄內屬於用戶cnscn的文件或目錄
find / -nouser 查找在系統中屬於作廢用戶的文件
[ningning@bogon ~]$ find / -nouser find: `/proc/1356/fd': Permission denied find: `/proc/1356/fdinfo': Permission denied find: `/proc/1356/ns': Permission denied find: `/proc/1357/task/1357/fd': Permission denied find: `/proc/1357/task/1357/fdinfo': Permission denied find: `/proc/1357/task/1357/ns': Permission denied find: `/proc/1357/fd': Permission denied find: `/proc/1357/fdinfo': Permission denied find: `/proc/1357/ns': Permission denied find: `/proc/1382/task/1382/fd': Permission denied-type 查找某一類型文件b 塊設備文件
d 目錄
c 字符設備文件
p 管道文件
l 鏈接字符文件
f 普通文件
[ningning@bogon ~]$ find -type d -print
.
./.gvfs
./.gnome2
./.gnome2/keyrings
./.gnome2/panel2.d
./.gnome2/panel2.d/default
./.gnome2/panel2.d/default/launchers
./.gnome2/nautilus-scripts
./.dbus
./.dbus/session-bus
./.gnote
./.gnote/addins
./.ssh
./.fontconfig
./.mozilla
./.mozilla/plugins
./.mozilla/extensions
./Downloads
./.gnupg
./.cache
[ningning@bogon ~]$ find -type f -exec -l{} \; //查看目錄下所有普通文件
find: `-l./.dmrc': No such file or directory
find: `-l./.xsession-errors': No such file or directory
find: `-l./.gnome2/keyrings/login.keyring': No such file or directory
find: `-l./.dbus/session-bus/dcd26acd87eabb5cc6f2133500000028-0': No such file or directory
find: `-l./.gnote/36595867-4cc7-4b1f-b298-b25e9c2080ac.note': No such file or directory
find: `-l./.gnote/9d4d7c5c-d46e-42eb-8d7f-ed5921568770.note': No such file or directory
find: `-l./.bash_profile': No such file or directory
find: `-l./.fontconfig/3830d5c3ddfd5cd38a049b759396e72e-le32d4.cache-3': No such file or directory
find: `-l./.bashrc': No such file or directory
find: `-l./.pulse-cookie': No such file or directory-size n:[c] 查找文件長度為n塊的文件，帶有c時表示文件以字節計。[ningning@bogon ~]$ find . -size 1000c -print //查找長度為1000c的文件 [ningning@bogon ~]$ find . -size +1000c -print //查找長度大於1000c的文件 . ./.xsession-errors ./.gvfs ./.gnome2 ./.gnome2/keyrings ./.gnome2/panel2.d ./.gnome2/panel2.d/default ./.gnome2/panel2.d/default/launchers ./.gnome2/nautilus-scripts ./.dbus ./.dbus/session-bus ./.gnote ./.gnote/36595867-4cc7-4b1f-b298-b25e9c2080ac.note ./.gnote/addins ./.gnote/9d4d7c5c-d46e-42eb-8d7f-ed5921568770.note ./.ssh ./.fontconfig ./.fontconfig/3830d5c3ddfd5cd38a049b759396e72e-le32d4.cache-3 ./.mozilla ./.mozilla/plugins ./.mozilla/extensions ./Downloads ./.gnupg [ningning@bogon ~]$ find . -size +10 -print //查長度超過期作廢10塊的文件（1塊=512字節） ./.gnupg/gpg.conf ./.cache/event-sound-cache.tdb.dcd26acd87eabb5cc6f2133500000028.i386-redhat-linux-gnu ./.pulse/dcd26acd87eabb5cc6f2133500000028-device-volumes.tdb ./.pulse/dcd26acd87eabb5cc6f2133500000028-stream-volumes.tdb ./.local/share/gvfs-metadata/home-6751745f.log ./.gconfd/saved_state ./.gstreamer-0.10/registry.i686.bin ./Desktop/gnome-terminal.desktop查找一個文件大小為5556字節的文件
[ningning@bogon ~]$ find /ningning -size -5557c -size +5555c -exec ls -ld{} \;
