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ÕýÎÄ
find /var/mail/ -size +50M -exec rm {} £Ü;
µÇ¼ºó¸´ÖÆ
ËÄ¡¢ÎļþµÄȨÏÞ Ê¹Óà “+” ÉèÖÃȨÏÞ£¬Ê¹Óà “-” ÓÃÓÚ×÷·Ï
9. chmod ÏÂÁî
ls -lh ÏÔʾȨÏÞ
chmod ugo+rwx directory1 ÉèÖÃĿ¼µÄËùÓÐÈË(u)¡¢Èº×é(g)ÒÔ¼°ÆäËûÈË(o)ÒÔ¶Á£¨r£¬4 £©¡¢Ð´(w£¬2)ºÍÖ´ÐÐ(x£¬1)µÄȨÏÞ
chmod go-rwx directory1 ɾ³ýȺ×é(g)ÓëÆäËûÈË(o)¶ÔĿ¼µÄ¶ÁдִÐÐȨÏÞ
10. chown ÏÂÁî
¸Ä±äÎļþµÄËùÓÐÕߣº
chown user1 file1 ¸Ä±äÒ»¸öÎļþµÄËùÓÐÈËÊôÐÔ
chown -R user1 directory1 ¸Ä±äÒ»¸öĿ¼µÄËùÓÐÈËÊôÐÔ²¢Í¬Ê±¸Ä±ä¸ÄĿ¼ÏÂËùÓÐÎļþµÄÊôÐÔ
chown user1:group1 file1 ¸Ä±äÒ»¸öÎļþµÄËùÓÐÈ˺ÍȺ×éÊôÐÔ
11. chgrp ÏÂÁî
¸Ä±äÎļþËùÊôÓû§×飺
chgrp group1 file1 ¸Ä±äÎļþµÄȺ×é
Îå¡¢Îı¾´¦Öóͷ£
12. grep ÏÂÁî
ÆÊÎöÒ»ÐеÄÐÅÏ¢£¬Èôµ±ÖÐÓÐÎÒÃÇËùÐèÒªµÄÐÅÏ¢£¬¾Í½«¸ÃÐÐÏÔʾ³öÀ´£¬¸ÃÏÂÁîͨ³£Óë¹ÜµÀÏÂÁîÒ»ÆðʹÓã¬ÓÃÓÚ¶ÔһЩÏÂÁîµÄÊä³ö¾ÙÐÐɸѡ¼Ó¹¤µÈµÈ£º
grep Aug /var/log/messages ÔÚÎļþ ‘/var/log/messages’ÖвéÕÒÒªº¦´Ê”Aug”
grep ^Aug /var/log/messages ÔÚÎļþ ‘/var/log/messages’ÖвéÕÒÒÔ”Aug”×îÏȵĴʻã
grep [0-9] /var/log/messages Ñ¡Ôñ ‘/var/log/messages’ ÎļþÖÐËùÓаüÀ¨Êý×ÖµÄÐÐ
grep Aug -R /var/log/* ÔÚĿ¼ ‘/var/log’ ¼°ËæºóµÄĿ¼ÖÐËÑË÷×Ö·û´®”Aug”
sed ‘s/stringa1/stringa2/g’ example.txt ½«example.txtÎļþÖÐµÄ “string1” Ìæ»»³É “string2”
sed ‘/^$/d’ example.txt ´Óexample.txtÎļþÖÐɾ³ýËùÓпÕȱÐУ¨ËÑË÷¹«ÖÚºÅJavaÖªÒô£¬»Ø¸´¡°2021¡±£¬ËÍÄãÒ»·ÝJavaÃæÊÔÌⱦµä£©
13. paste ÏÂÁî
paste file1 file2 ºÏ²¢Á½¸öÎļþ»òÁ½À¸µÄÄÚÈÝ
paste -d ‘+’ file1 file2 ºÏ²¢Á½¸öÎļþ»òÁ½À¸µÄÄÚÈÝ£¬ÖÐÐÄÓÔ+”Çø·Ö
14. sort ÏÂÁî
sort file1 file2 ÅÅÐòÁ½¸öÎļþµÄÄÚÈÝ
sort file1 file2 | uniq È¡³öÁ½¸öÎļþµÄ²¢¼¯(Öظ´µÄÐÐÖ»±£´æÒ»·Ý)
sort file1 file2 | uniq -u ɾ³ý½»¼¯£¬ÁôÏÂÆäËûµÄÐÐ
sort file1 file2 | uniq -d È¡³öÁ½¸öÎļþµÄ½»¼¯(Ö»ÁôÏÂͬʱ±£´æÓÚÁ½¸öÎļþÖеÄÎļþ)
15. comm ÏÂÁî
comm -1 file1 file2 ½ÏÁ¿Á½¸öÎļþµÄÄÚÈÝֻɾ³ý ‘file1’ Ëù°üÀ¨µÄÄÚÈÝ
comm -2 file1 file2 ½ÏÁ¿Á½¸öÎļþµÄÄÚÈÝֻɾ³ý ‘file2’ Ëù°üÀ¨µÄÄÚÈÝ
comm -3 file1 file2 ½ÏÁ¿Á½¸öÎļþµÄÄÚÈÝֻɾ³ýÁ½¸öÎļþ¹²ÓеIJ¿·Ö
Áù¡¢´ò°üºÍѹËõÎļþ
16. tar ÏÂÁî
¶ÔÎļþ¾ÙÐдò°ü£¬Ä¬ÈÏÇéÐβ¢²»»áѹËõ£¬ÈôÊÇÖ¸¶¨ÁËÏìÓ¦µÄ²ÎÊý£¬Ëü»¹»áŲÓÃÏìÓ¦µÄѹËõ³ÌÐò£¨ÈçgzipºÍbzipµÈ£©¾ÙÐÐѹËõÏ¢Õùѹ£º
-c £ºÐ½¨´ò°üÎļþ
-t £ºÉó²é´ò°üÎļþµÄÄÚÈݺ¬ÓÐÄÄЩÎļþÃû
-x £º½â´ò°ü»ò½âѹËõµÄ¹¦Ð§£¬¿ÉÒÔ´îÅä-C£¨´óд£©Ö¸¶¨½âѹµÄĿ¼£¬×¢ÖØ-c,-t,-x²»¿Éͬʱ·ºÆðÔÚͳһÌõÏÂÁîÖÐ
-j £ºÍ¨¹ýbzip2µÄÖ§³Ö¾ÙÐÐѹËõ/½âѹËõ
-z £ºÍ¨¹ýgzipµÄÖ§³Ö¾ÙÐÐѹËõ/½âѹËõ
-v £ºÔÚѹËõ/½âѹËõÀú³ÌÖУ¬½«ÕýÔÚ´¦Öóͷ£µÄÎļþÃûÏÔʾ³öÀ´
-f filename £ºfilenameΪҪ´¦Öóͷ£µÄÎļþ
-C dir £ºÖ¸¶¨Ñ¹Ëõ/½âѹËõµÄĿ¼dir
ѹËõ£ºtar -jcv -f filename.tar.bz2 Òª±»´¦Öóͷ£µÄÎļþ»òĿ¼Ãû³Æ
ÅÌÎÊ£ºtar -jtv -f filename.tar.bz2
½âѹ£ºtar -jxv -f filename.tar.bz2 -C Óû½âѹËõµÄĿ¼
bunzip2 file1.bz2 ½âѹһ¸ö½Ð×ö ‘file1.bz2’µÄÎļþ
bzip2 file1 ѹËõÒ»¸ö½Ð×ö ‘file1’ µÄÎļþ
gunzip file1.gz ½âѹһ¸ö½Ð×ö ‘file1.gz’µÄÎļþ
gzip file1 ѹËõÒ»¸ö½Ð×ö ‘file1’µÄÎļþ
gzip -9 file1 ×îºéÁ÷ƽѹËõ
rar a file1.rar test_file ½¨ÉèÒ»¸ö½Ð×ö ‘file1.rar’ µÄ°ü
rar a file1.rar file1 file2 dir1 ͬʱѹËõ ‘file1’, ‘file2’ ÒÔ¼°Ä¿Â¼ ‘dir1’
rar x file1.rar ½âѹrar°ü
zip file1.zip file1 ½¨ÉèÒ»¸özipÃûÌõÄѹËõ°ü
unzip file1.zip ½âѹһ¸özipÃûÌÃѹËõ°ü
zip -r file1.zip file1 file2 dir1 ½«¼¸¸öÎļþºÍĿ¼ͬʱѹËõ³ÉÒ»¸özipÃûÌõÄѹËõ°ü
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shutdown -h now ¹Ø±Õϵͳ(1)
init 0 ¹Ø±Õϵͳ(2)
telinit 0 ¹Ø±Õϵͳ(3)
shutdown -h hours:minutes & °´Ô¤×¼Ê±¼ä¹Ø±Õϵͳ
shutdown -c ×÷·Ï°´Ô¤×¼Ê±¼ä¹Ø±Õϵͳ
shutdown -r now ÖØÆô(1)
reboot ÖØÆô(2)
logout ×¢Ïú
time ²âËãÒ»¸öÏÂÁ¼´³ÌÐò£©µÄÖ´ÐÐʱ¼ä
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17 jpsÏÂÁî
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18 psÏÂÁî
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-A £ºËùÓеÄÀú³Ì¾ùÏÔʾ³öÀ´
-a £º²»ÓëterminalÓйصÄËùÓÐÀú³Ì
-u £ºÓÐÓÃÓû§µÄÏà¹ØÀú³Ì
-x £ºÒ»Ñùƽ³£Óëa²ÎÊýÒ»ÆðʹÓ㬿ÉÁгö½ÏÍêÕûµÄÐÅÏ¢
-l £º½Ï³¤£¬½ÏÏêϸµØ½«PIDµÄÐÅÏ¢Áгö
ps aux # Éó²éϵͳËùÓеÄÀú³ÌÊý¾Ýps ax # Éó²é²»ÓëterminalÓйصÄËùÓÐÀú³Ìps -lA # Éó²éϵͳËùÓеÄÀú³ÌÊý¾Ýps axjf # Éó²éÁ¬Í³Ò»²¿·ÖÀú³ÌÊ÷״̬
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19 killÏÂÁî
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20 killallÏÂÁî
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21 topÏÂÁî
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kill -9 pid £¨-9ÌåÏÖÇ¿Öƹرգ©
killall -9 ³ÌÐòµÄÃû×Ö
pkill ³ÌÐòµÄÃû×Ö
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netstat -tunlp|grep ¶Ë¿ÚºÅ
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