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Table of Contents
1. ×î³£ÓõÄÃüÁîÁбí
2. chmod----¸Ä±äÒ»¸ö»ò¶à¸öÎļþµÄ´æÈ¡Ä£Ê½(mode)
3. chgrp----ÐÞ¸ÄÎļþ»òĿ¼µÄËùÊô×é
4. chown----ÉèÖÃÒ»¸ö»ò¶à¸öÎļþ»òĿ¼µÄÊôÖ÷Éí·Ý
5. date----ÏÔʾ¡¢ÐÞ¸Äϵͳʱ¼ä
6. df-----ÏÔʾÒѰ²×°ÎļþϵͳµÄ´ÅÅÌÈÝÁ¿×´Ì¬
7. fdisk----·ÖÇø±í²éѯ¹¤¾ß
8. hdparm----Ó²Å̹ÜÀí
9. ln-----ΪÎļþ½¨Á¢±ðÃû
10. shutdown-----ÖÕÖ¹ËùÓнø³ÌÐò£¬¹Ø±Õ¼ÆËã»ú¡£
11. sleep-----Ö´ÐÐÁíÒ»¸öÃüÁî֮ǰµÈ´ýµÄʱ¼ä
12. swapon/swapoff-----Æô¶¯ºÍ¹Ø±Õ½»»»·ÖÇø
13. tune2fs-----µ÷ÕûLinuxµÚ¶þÀ©Õ¹ÎļþϵͳµÄ²ÎÊý
14. uniq----¹ýÂË¡¢Í³¼Æ¡¢É¾³ýÖØ¸´ÐÐ
15. wc-----Êä³öÿ¸öÎļþÖеÄ×Ö·ûÊý¡¢µ¥´ÊÊý¼°ÐÐÊý¡£
1. ×î³£ÓõÄÃüÁîÁбí
ÏÂÃæÁгöÊ®¸öÔÚʹÓÃlinux¹ý³ÌÖÐʹÓÃÆµÂÊ×î¸ßµÄÃüÁî¡£ÕâÀïÖ»×÷¼òµ¥½éÉÜ£¬¾ßÌåÓ÷¨Çë²Î¿¼ºóÃæÄÚÈÝ¡£
? cat£¬ÏÔʾÎļþÄÚÈÝ¡£
? cd£¬¸Ä±äĿ¼·¾¶¡£
? cp£¬¸´ÖÆÎļþ¡£
? find£¬²éÕÒÎļþ¡£
? grep£¬ËÑË÷¡¢¹ýÂËÐÅÏ¢¡£
? ls£¬ÁгöĿ¼ÐÅÏ¢¡£
? more£¬·ÖÒ³ÏÔʾ¡£
? rm£¬É¾³ýÎļþ»òĿ¼¡£
? vi£¬µ÷ÓÃviÎı¾±à¼­Æ÷¡£
? who£¬ÏÔʾµÇ¼Óû§ÐÅÏ¢¡£
2. chmod----¸Ä±äÒ»¸ö»ò¶à¸öÎļþµÄ´æÈ¡Ä£Ê½(mode)
chmod [options] mode files
Ö»ÄÜÎļþÊôÖ÷»òÌØÈ¨Óû§²ÅÄÜʹÓøù¦ÄÜÀ´¸Ä±äÎļþ´æÈ¡Ä£Ê½¡£mode¿ÉÒÔÊÇÊý×ÖÐÎʽ»òÒÔwho opcode permissionÐÎʽ±íʾ¡£whoÊÇ¿ÉÑ¡µÄ£¬Ä¬ÈÏÊÇa(ËùÓÐÓû§)¡£Ö»ÄÜÑ¡ÔñÒ»¸öopcode(²Ù×÷Âë)¡£¿ÉÖ¸¶¨¶à¸ömode£¬ÒÔ¶ººÅ·Ö¿ª¡£
? options£º
-c£¬--changes
Ö»Êä³ö±»¸Ä±äÎļþµÄÐÅÏ¢
-f£¬--silent£¬--quiet
µ±chmod²»ÄܸıäÎļþģʽʱ£¬²»Í¨ÖªÎļþµÄÓû§
--help
Êä³ö°ïÖúÐÅÏ¢¡£
-R£¬--recursive
¿ÉµÝ¹é±éÀú×ÓĿ¼£¬°ÑÐÞ¸ÄÓ¦µ½Ä¿Â¼ÏÂËùÓÐÎļþºÍ×ÓĿ¼
--reference=filename
²ÎÕÕfilenameµÄȨÏÞÀ´ÉèÖÃȨÏÞ
-v£¬--verbose
ÎÞÂÛÐÞ¸ÄÊÇ·ñ³É¹¦£¬Êä³öÿ¸öÎļþµÄÐÅÏ¢
--version
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? who
u
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a
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? opcode
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=
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permission
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t
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g
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? ×÷ΪѡÔñ£¬ÎÒÃǶàÊýÓÃÈýλ°Ë½øÖÆÊý×ÖµÄÐÎʽÀ´±íʾȨÏÞ£¬µÚһλָ¶¨ÊôÖ÷µÄȨÏÞ£¬µÚ¶þλָ¶¨×éȨÏÞ£¬µÚÈýλָ¶¨ÆäËûÓû§µÄȨÏÞ£¬Ã¿Î»Í¨¹ý4(¶Á)¡¢2(д)¡¢1(Ö´ÐÐ)ÈýÖÖÊýÖµµÄºÍÀ´È·¶¨È¨ÏÞ¡£Èç6(4+2)´ú±íÓжÁдȨ£¬7(4+2+1)ÓжÁ¡¢Ð´ºÍÖ´ÐеÄȨÏÞ¡£
? »¹¿ÉÉèÖõÚËÄ룬ËüλÓÚÈýλȨÏÞÐòÁеÄÇ°Ãæ£¬µÚËÄλÊý×ÖȡֵÊÇ4£¬2£¬1£¬´ú±íÒâ˼ÈçÏ£º
o 4£¬Ö´ÐÐʱÉèÖÃÓû§ID£¬ÓÃÓÚÊÚȨ¸ø»ùÓÚÎļþÊôÖ÷µÄ½ø³Ì£¬¶ø²»ÊǸø´´½¨´Ë½ø³ÌµÄÓû§¡£
o 2£¬Ö´ÐÐʱÉèÖÃÓû§×éID£¬ÓÃÓÚÊÚȨ¸ø»ùÓÚÎļþËùÔÚ×éµÄ½ø³Ì£¬¶ø²»ÊÇ»ùÓÚ´´½¨´Ë½ø³ÌµÄÓû§¡£
o 1£¬ÉèÖÃÕ³×Åλ¡£
? ʵÀý£º
? $ chmod u+x file ¸øfileµÄÊôÖ÷Ôö¼ÓÖ´ÐÐȨÏÞ
? $ chmod 751 file ¸øfileµÄÊôÖ÷·ÖÅä¶Á¡¢Ð´¡¢Ö´ÐÐ(7)µÄȨÏÞ£¬¸øfileµÄËùÔÚ×é·ÖÅä¶Á¡¢Ö´ÐÐ(5)µÄȨÏÞ£¬¸øÆäËûÓû§·ÖÅäÖ´ÐÐ(1)µÄȨÏÞ
? $ chmod u=rwx,g=rx,o=x file ÉÏÀýµÄÁíÒ»ÖÖÐÎʽ
? $ chmod =r file ΪËùÓÐÓû§·ÖÅä¶ÁȨÏÞ
? $ chmod 444 file ͬÉÏÀý
? $ chmod a-wx,a+r ͬÉÏÀý
? $ chmod -R u+r directory µÝ¹éµØ¸ødirectoryĿ¼ÏÂËùÓÐÎļþºÍ×ÓĿ¼µÄÊôÖ÷·ÖÅä¶ÁµÄȨÏÞ
? $ chmod 4755 ÉèÖÃÓÃID£¬¸øÊôÖ÷·ÖÅä¶Á¡¢Ð´ºÍÖ´ÐÐȨÏÞ£¬¸ø×éºÍÆäËûÓû§·ÖÅä¶Á¡¢Ö´ÐеÄȨÏÞ¡£
3. chgrp----ÐÞ¸ÄÎļþ»òĿ¼µÄËùÊô×é
chgrp [options] newgroup files/directorys
×éÃû¿ÉÒÔÓÃ×éµÄIDºÅ£¬Ò²¿ÉÓÃ/etc/groupÖеÄ×éÃû¡£Ö»ÓÐÎļþµÄÊôÖ÷»òÌØÈ¨Óû§(root)²Å¿É¸Ä±äËüµÄ×é¡£
? options£º
-c£¬--changes
Ö»Êä³ö±»¸Ä±äÎļþµÄÐÅÏ¢
-f£¬--silent£¬--quiet
µ±²»ÄܸıäÎļþ×éÊôÐÔʱ£¬²»Í¨ÖªÎļþµÄÓû§
--help
Êä³ö°ïÖúÐÅÏ¢¡£
-R£¬--recursive
¿ÉµÝ¹é±éÀú×ÓĿ¼£¬°ÑÐÞ¸ÄÓ¦µ½Ä¿Â¼ÏÂËùÓÐÎļþºÍ×ÓĿ¼
--reference=filename
²ÎÕÕfilenameµÄ×éÐÅÏ¢À´ÉèÖõ±Ç°ÎļþµÄ×é
-v£¬--verbose
Êä³öÏêϸÐÅÏ¢
--version
Êä³ö°æ±¾ÐÅÏ¢¡£
? ʵÀý£º
? $ chgrp root test °ÑtestµÄËùÊô×é¸ü¸Äroot×é
? $ chgrp -R mysql test µÝ¹éµØ°ÑtestĿ¼¼°¸ÃĿ¼ÏÂËùÓÐÎļþºÍ×ÓĿ¼µÄ×éÊôÐÔÉèÖóÉmysql
? $ chgrp root * °Ñµ±Ç°Ä¿Â¼ÖÐËùÓÐÎļþµÄ×éÊôÐÔÉèÖóÉroot
4. chown----ÉèÖÃÒ»¸ö»ò¶à¸öÎļþ»òĿ¼µÄÊôÖ÷Éí·Ý
chown [options] newowner files/directorys
еÄÊôÖ÷¿ÉÒÔÊÇÓû§µÄIDºÅ£¬Ò²¿ÉÒÔÊÇ/etc/passwdÀïµÄµÇ¼Ãû¡£chownÒ²¿É½ÓÊÜÕâÑùµÄÐÎʽ£ºnewowner:newgroup»ònewowner.newgroup¡£Í¬Ê±¸Ä±äËùÊô×éµÄÊôÐÔ¡£Èç¹û¾äµãºÍðºÅºóûÓÐ×éÃû£¬Ôò×é¸Ä±äΪÐÂÊôÖ÷µÄ×é¡£Ö»ÓÐÎļþ»òĿ¼µÄµ±Ç°ÊôÖ÷²ÅÓÐȨ¸Ä±äËüµÄÊôÐÔ¡£
? options£º
-c£¬--changes
Ö»Êä³ö±»¸Ä±äÎļþµÄÐÅÏ¢
--dereference
¸ú×Ù·ûºÅÁ´½Ó
-h£¬--no-dereference
¸Ä±äÿһ¸ö·ûºÅÁ´µÄÊôÖ÷Éí·Ý£¬¶ø²»ÊDZ»ÒýÓÃÎļþµÄÊôÖ÷Éí·Ý
-f£¬--silent£¬--quiet
µ±²»ÄܸıäÎļþÊôÖ÷ÊôÐÔʱ£¬²»Í¨ÖªÎļþµÄÓû§
--help
Êä³ö°ïÖúÐÅÏ¢¡£
-R£¬--recursive
¿ÉµÝ¹é±éÀú×ÓĿ¼£¬°ÑÐÞ¸ÄÓ¦µ½Ä¿Â¼ÏÂËùÓÐÎļþºÍ×ÓĿ¼
--reference=filename
°ÑÊôÖ÷¸Ä±ä³ÉfilenameÎļþµÄÊôÖ÷
-v£¬--verbose
Êä³öÏêϸÐÅÏ¢
--version
Êä³ö°æ±¾ÐÅÏ¢¡£
? ʵÀý£º
? $ chown root test °ÑtestÎļþµÄÊôÖ÷¸Ä½øroot
? $ chown -R root test_directory µÝ¹éµØ°Ñtest_directoryĿ¼ÏµÄËùÓÐÎļþÊôÖ÷¸Ä³Éroot
? $ chown --dereference root test_link °Ñtest_linkÁ´½ÓµÄÔ­ÎļþÊôÖ÷¸Ä³Éroot£¬Á´½ÓÎļþÊôÖ÷²»±ä
? $ chown --no-dereference root test_link °Ñtest_linkµÄÁ´½ÓÎļþÊôÖ÷¸Ä³Éroot£¬Ô­ÎļþÊôÖ÷²»±ä
5. date----ÏÔʾ¡¢ÐÞ¸Äϵͳʱ¼ä
date [options][+format][date]
$ date -s 06/09/2004 ÐÞ¸ÄÈÕÆÚ£¨°´ÔÂÈÕÄê¸ñʽ£©
$ date -s 13:56:00 ÐÞ¸Äʱ¼ä£¨°´Ê±·ÖÃë¸ñʽ£©
$ date -r test ÏÔʾtestÎļþ×îºóÒ»´ÎµÄÐÞ¸Äʱ¼ä
$ date +'%Y-%m-%d' ÒÔyyyy-mm-dd¸ñʽÏÔʾÈÕÆÚ,ÆäËü¸ñʽÇë²Î¿¼°ïÖú
$ clock -r ²éѯBIOSʱ¼ä
$ clock -w °ÑÐ޸ĺóµÄʱ¼äд»ØBIOS


6. df-----ÏÔʾÒѰ²×°ÎļþϵͳµÄ´ÅÅÌÈÝÁ¿×´Ì¬
df [options][name]
$ df -h ÒÔÓѺõĸñʽÊä³öËùÓÐÒѰ²×°ÎļþϵͳµÄ´ÅÅÌÈÝÁ¿×´Ì¬
$ df -m /home ÒÔMΪµ¥Î»Êä³öhomeĿ¼µÄ´ÅÅÌÈÝÁ¿×´Ì¬
$ df -k ÒÔKΪµ¥Î»Êä³öËùÓÐÒѰ²×°ÎļþϵͳµÄ´ÅÅÌÈÝÁ¿×´Ì¬
$ df -i ±¨¸æ¿ÕÏеġ¢ÓùýµÄ»ò²¿·ÝÓùýµÄ£¨°Ù·Ý±È£©Ë÷Òý½Úµã
$ df -t ext3 ½öÏÔʾÎļþÀàÐÍΪext3µÄÎļþϵͳµÄ´ÅÅÌ״̬
$ df -x ext3 ½öÏÔʾÎļþÀàÐͲ»Îªext3µÄÎļþϵͳµÄ´ÅÅÌ״̬
$ df -T ³ýÏÔʾÎļþϵͳ´ÅÅÌÈÝÁ¿´óСÍ⻹ÏÔʾÎļþϵͳÀàÐÍ
$ df -l ½öÏÔʾ±¾µØÎļþϵͳ¡£


7. fdisk----·ÖÇø±í²éѯ¹¤¾ß
fdisk [options][driver]
$ fdisk -l ÁгöËùÓзÖÇøÐÅÏ¢
8. hdparm----Ó²Å̹ÜÀí
hdparm [options][driver]
$ hdparm -d /dev/hda ÏÔʾӲÅ̵ÄDMAģʽÊDz»´ò¿ª£¬1´ú±íon
$ hdparm -tT /dev/hda ²âÊÔÓ²Å̵ÄдÐÔÄÜ
$ hdparm -d1 /dev/hda ¿ªÆôdma¹¦ÄÜ
$ hdparm -d1 -X68 -c3 -m16 /dev/hda
Ñ¡Ïî˵Ã÷£º
-c3£º°ÑÓ²Å̵ÄIOģʽ´Ó16λת³É32λ¡£
-m16£º¸Ä±äÓ²Å̵Ķà·ÉÈÇøµÄ¶Á¹¦ÄÜ£¬-m16ʹӲÅÌÔÚÒ»´ÎI/OÖжÏÖжÁÈë16¸öÉÈÇøµÄÊý¾Ý¡£
-d1£º´ò¿ªDMAģʽ¡£
-X68£ºÖ§³ÖATA66µÄÊý¾Ý´«Êäģʽ¡£ÏÂÃæÊÇÆäËüģʽµÄÉèÖöÔÕÕ
ATA33.......²ÎÊýÊÇ-X66
ATA66.......²ÎÊýÊÇ-X68
ATA100......²ÎÊýÊÇ-X69
$ hdparm -k1 /dev/hda ±£´æÉèÖÃ


9. ln-----ΪÎļþ½¨Á¢±ðÃû
ln [options] sourcename [destname]
ln [options] sourcenames destdirectory
$ ln -s file1 file2 ½¨Á¢Ò»¸öµ½file1µÄ·ûºÅÁ´½Ófile2£¬É¾³ýfile2²»»áÓ°Ïìfile1
$ ln -s -f file1 file2 ½¨Á¢Ò»¸öµ½file1µÄ·ûºÅÁ´½Ófile2£¬²¢²»ÌáʾÊÇ·ñÖØÐ´
10. shutdown-----ÖÕÖ¹ËùÓнø³ÌÐò£¬¹Ø±Õ¼ÆËã»ú¡£
shutdown [options] when [message]
ÓÃwhen¿ÉÒÔÊÇÖ¸¶¨µÄ¹Ø»úʱ¼ä(ÒÔhh:mm¸ñʽ)¡¢¹Ø»úǰҪµÈ´ýµÄʱ¼ä(ÒÔ+m¸ñʽ)¡¢»òÕßnow¡£messageÖ¸¶¨Ò»Ìõ¹ã²¥ÏûϢ֪ͨËùÓÐÓû§Í˳öϵͳ¡£showdown¸øËùÓнø³Ì·¢ËÍSIGTERMÐźţ¬²¢µ÷ÓÃinit 1Ö´ÐÐʵ¼ÊµÄ¹Ø»ú¶¯×÷¡£
$ shutdown -c È¡ÏûÕýÔÚ½øÐеĹرղÙ×÷
$ shutdown -f ¿ìËÙÖØÐÂÆô¶¯£¬ÔÚÖØÐÂÆô¶¯Ê±½ûÖ¹¶ÔfsckµÄ³£¹æµ÷ÓÃ
$ shutdown -h µ±¹Ø±ÕÍê³Éʱֹͣϵͳ
$ shutdown -k Êä³ö¾¯¸æÐÅÏ¢£¬µ«½ûֹʵ¼ÊµÄ¹Ø±Õ
$ shutdown -n ²»µ÷ÓÃinit¾ÍÖ´ÐйرÕ
$ shutdown -r µ±¹Ø±ÕÍê³ÉÊ±ÖØÐÂÆô¶¯ÏµÍ³
$ shutdown -t 5 ÔÚɱËÀ½ø³ÌºÍ¸Ä±äÔËÐм¶±ðÖ®¼äÈ·±£ÑÓʱ5Ãë
11. sleep-----Ö´ÐÐÁíÒ»¸öÃüÁî֮ǰµÈ´ýµÄʱ¼ä
sleep amount [units]
unitsĬÈÏΪÃë(s)£¬m±íʾ·ÖÖÓ£¬h±íʾСʱ£¬d±íʾÌì¡£
12. swapon/swapoff-----Æô¶¯ºÍ¹Ø±Õ½»»»·ÖÇø
swapon/swapoff [options] device
$ swapon -s ÏÔʾ½»»»·ÖÇøÐÅÏ¢
$ swapon -a ¼¤»îËùÓÐÔÚ/etc/fstabÖÐÓÐsw±ê¼ÇµÄ·ÖÇø
$ swapon -p 1 ÉèÖý»»»·ÖÇøÓÅÏȼ¶Îª1
13. tune2fs-----µ÷ÕûLinuxµÚ¶þÀ©Õ¹ÎļþϵͳµÄ²ÎÊý
tune2fs [options] device
$ tune2fs -l /dev/hda1 ÏÔʾhda1·ÖÇøµÄ³¬¼¶¿éÄÚÈÝ
$ tune2fs -c 100 /dev/hda1 ÉèÖÃhda1·ÖÇøÃ¿mount100´Î¾Í½øÐдÅÅ̼ì²é
14. uniq----¹ýÂË¡¢Í³¼Æ¡¢É¾³ýÖØ¸´ÐÐ
uniq [options][file1 [files]]
$ uniq -c file fileÖеÄÖØ¸´ÐÐÊä³öÒ»´Î£¬²¢ÔÚÿÐÐǰÏÔÊ¾ÖØ¸´´ÎÊý
$ uniq -d file fileÖеÄÖØ¸´ÐÐÊä³öÒ»´Î£¬µ«²»Êä³öΨһµÄÐÐ
$ uniq -u file Ö»Êä³öfileÖеÄΨһÐÐ
$ uniq file1 file2 °Ñfile1ÖеÄÖØ¸´µÄÏàÁÚÐÐɾ³ý£¬²¢°ÑÿÐеÄÒ»¸ö¿½±´Ë͵½file2


15. wc-----Êä³öÿ¸öÎļþÖеÄ×Ö·ûÊý¡¢µ¥´ÊÊý¼°ÐÐÊý¡£
wc [options][files]
$ wc -l file Êä³öfileÖеÄÐÐÊý
$ wc -w file Êä³öfileÖеĵ¥´ÊÊý
$ wc -c file Êä³öfileÖеÄ×Ö·ûÊý




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