{"id":2340,"date":"2018-07-25T23:01:24","date_gmt":"2018-07-25T16:01:24","guid":{"rendered":"https:\/\/engisv.info\/?p=2340"},"modified":"2018-08-18T14:44:06","modified_gmt":"2018-08-18T07:44:06","slug":"mot-so-dieu-co-ban-ve-lenh-tren-linux","status":"publish","type":"post","link":"https:\/\/www.engisv.info\/?p=2340","title":{"rendered":"M\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux"},"content":{"rendered":"<p><span style=\"font-family: georgia, palatino, serif;\">Khi nghe n\u00f3i \u0111\u1ebfn s\u1eed d\u1ee5ng Linux, nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn b\u1ecb \u00e1m \u1ea3nh do ph\u1ea3i s\u1eed d\u1ee5ng d\u00f2ng l\u1ec7nh, nh\u01b0ng n\u1ebfu n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux, s\u1ebd gi\u00fap b\u1ea1n b\u1edbt \u00e1m \u1ea3nh v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng l\u1ec7nh.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">Linux l\u00e0 kernel \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n Unix, tr\u00ean Linux, c\u00e1c k\u00fd t\u1ef1 hoa v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t r\u1ea5t r\u00f5 r\u00e0ng, k\u00fd t\u1ef1 &#8220;A&#8221; kh\u00e1c v\u1edbi &#8220;a&#8221;. K\u00fd t\u1ef1 hoa, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t trong c\u1ea3 c\u00e2u l\u1ec7nh, c\u00e1ch \u0111\u1eb7t t\u00ean cho t\u1ec7p tin (file), th\u01b0 m\u1ee5c (directory)&#8230; V\u00ec v\u1eady khi th\u1ef1c hi\u1ec7n c\u00e1c c\u00e2u l\u1ec7nh v\u00e0 \u0111\u1eb7t t\u00ean ph\u1ea3i c\u1ef1c k\u1ef3 th\u1eadn trong trong v\u1ea5n \u0111\u1ec1 k\u00fd t\u1ef1 hoa th\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">L\u1ec7nh trong Linux ch\u00fang ta c\u00f3 th\u1ec3 ph\u00e2n chia l\u00e0m hai lo\u1ea1i, l\u00e0 l\u1ec7nh d\u00f9ng chung hay l\u1ec7nh ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng chung cho c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux v\u00e0 l\u1ec7nh d\u00f9ng ri\u00eang do c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n h\u1ec7 \u0111i\u1ec1u h\u00e0nh ph\u00e1t tri\u1ec3n ri\u00eang cho h\u1ec7 \u0111i\u1ec1u h\u00e0nh \u0111\u00f3. V\u00ed d\u1ee5: \u1edf CentOS \u0111\u1ec3 c\u00e0i c\u00e1c g\u00f3i ph\u1ea7n m\u1ec1m b\u1ea1n d\u00f9ng l\u1ec7nh <strong>yum install [g\u00f3i c\u1ea7n c\u00e0i \u0111\u1eb7t]<\/strong> nh\u01b0ng tr\u00ean Ubuntu s\u1ebd l\u00e0 <strong>apt-get install [g\u00f3i c\u00e0i \u0111\u1eb7t]<\/strong>.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">\u0110\u1ec3 th\u1ef1c hi\u1ec7n l\u1ec7nh tr\u00ean Linux, b\u1ea1n s\u1ebd c\u1ea7n v\u00e0o giao di\u1ec7n d\u00f2ng l\u1ec7nh (terminal) c\u1ee7a Linux. \u1ede terminal tr\u00ean Linux c\u00f3 hai \u0111\u1eb7c quy\u1ec1n ch\u00ednh l\u00e0 <strong>quy\u1ec1n user b\u00ecnh th\u01b0\u1eddng<\/strong> v\u00e0 <strong>quy\u1ec1n root<\/strong>:<\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">Ch\u1ebf \u0111\u1ed9 user b\u00ecnh th\u01b0\u1eddng, ch\u1ebf \u0111\u1ed9 n\u00e0y b\u1eaft \u0111\u1ea7u d\u1ea5u nh\u1eafc l\u1ec7nh l\u00e0 d\u1ea5u <strong>$<\/strong>.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2343  aligncenter\" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2017\/06\/Linux_Bs_Cmd-1.png\" alt=\"\" width=\"352\" height=\"83\" \/><\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">Ch\u1ebf \u0111\u1ed9 root, ch\u1ebf \u0111\u1ed9 n\u00e0y b\u1eaft \u0111\u1ea7u d\u1ea5u nh\u1eafc l\u1ec7nh l\u00e0 d\u1ea5u <strong>#<\/strong>.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2344  aligncenter\" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2017\/06\/Linux_Bs_Cmd-2.png\" alt=\"\" width=\"358\" height=\"81\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\"><strong>C\u00e1c l\u1ec7nh tr\u00ean Linux c\u0169ng c\u00f3 th\u1ec3 chia l\u00e0m hai lo\u1ea1i, lo\u1ea1i kh\u00f4ng c\u1ea7n quy\u1ec1n root v\u00e0 lo\u1ea1i c\u1ea7n quy\u1ec1n root:<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">Lo\u1ea1i kh\u00f4ng c\u1ea7n quy\u1ec1n root l\u00e0 lo\u1ea1i ch\u1ec9 d\u00f9ng \u0111\u1ec3 hi\u1ec3n th\u1ecb th\u00f4ng tin, v\u00ed d\u1ee5 nh\u01b0 l\u1ec7nh hostname, ifconfig, nslookup&#8230;<\/span><\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\">Lo\u1ea1i c\u1ea7n quy\u1ec1n root l\u00e0 c\u00e1c l\u1ec7nh li\u00ean quan \u0111\u1ebfn c\u1ea5u h\u00ecnh, c\u00e0i \u0111\u1eb7t. Khi b\u1ea1n c\u1ea5n thay \u0111\u1ed5i th\u00f4ng tin c\u1ea5u h\u00ecnh c\u1ee7a d\u1ecbch v\u1ee5, ph\u1ea7n m\u1ec1m, file h\u1ec7 th\u1ed1ng b\u1ea1n c\u0169ng s\u1ebd c\u1ea7n quy\u1ec1n root.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><strong>Chuy\u1ec3n quy\u1ec1n t\u1eeb ch\u1ebf \u0111\u1ed9 user b\u00ecnh th\u01b0\u1eddng l\u00ean root:<\/strong>\u00a0<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">\u0110\u1ec3 chuy\u1ec3n quy\u1ec1n t\u1eeb user th\u01b0\u1eddng l\u00ean root, ch\u00fang ta d\u00f9ng l\u1ec7nh <strong>su<\/strong> v\u00e0 <strong>sudo<\/strong>, hai l\u1ec7nh n\u00e0y d\u00f9ng \u0111\u1ec3 chuy\u1ec3n quy\u1ec1n user th\u00f4ng th\u01b0\u1eddng c\u00f3 \u0111\u1eb7c quy\u1ec1n c\u1ee7a super user (quy\u1ec1n root) \u0111\u1ec3 user c\u00f3 th\u1ec3 c\u00e0i \u0111\u1eb7t c\u00e1c g\u00f3i ph\u1ea7n m\u1ec1m, th\u1ef1c hi\u1ec7n c\u00e1c l\u1ec7nh m\u00e0 h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 quy\u1ec1n root m\u1edbi c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n. Ch\u00fang ta s\u1ebd \u0111i t\u00ecm hi\u1ec3u hai l\u1ec7nh n\u00e0y v\u00e0 t\u00ecm ki\u1ebfm s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eef su v\u00e0 sudo.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\"><strong>L\u1ec7nh sudo<\/strong>:<\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng khi th\u1ef1c hi\u1ec7n l\u1ec7nh \u0111\u01a1n l\u1ebd (d\u1ea5u nh\u1eafc l\u1ec7nh c\u1ee7a user v\u1eabn l\u00e0 $), \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 khi c\u1ea7n th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ec7nh n\u00e0o \u0111\u00f3 b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n theo c\u1ea5u tr\u00fac<strong> sudo [command]<\/strong>. V\u00ed d\u1ee5 tr\u00ean Ubuntu b\u1ea1n c\u1ea7n c\u00e0i \u0111\u1eb7t m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m, b\u1ea1n s\u1ebd th\u1ef1c hi\u1ec7n l\u1ec7nh <strong>sudo apt-get install [g\u00f3i ph\u1ea7n m\u1ec1m c\u1ea7n c\u00e0i \u0111\u1eb7t]<\/strong>, n\u1ebfu mu\u1ed1n ti\u1ebfp t\u1ee5c th\u1ef1c hi\u1ec7n th\u00eam m\u1ed9t l\u1ea7n c\u00e0i \u0111\u1eb7t g\u00f3i ph\u1ea7n m\u1ec1m, b\u1ea1n s\u1ebd ph\u1ea3i l\u1eadp l\u1ea1i \u0111\u1ea7y \u0111\u1ee7 c\u1ea5u tr\u00fac <strong>sudo apt-get install [g\u00f3i ph\u1ea7n m\u1ec1m c\u00e0i \u0111\u1eb7t 2]<\/strong><\/span><\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\">Khi th\u1ef1c hi\u1ec7n l\u1ec7nh sudo, b\u1ea1n s\u1ebd c\u1ea7n nh\u1eadp password c\u1ee7a ch\u00ednh user hi\u1ec7n t\u1ea1i \u0111ang s\u1eed d\u1ee5ng.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3595 \" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2018\/07\/linux-command-4.png\" alt=\"\" width=\"456\" height=\"118\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\"><strong>L\u1ec7nh su<\/strong>:<\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">L\u1ec7nh <strong>su<\/strong> chuy\u1ec3n quy\u1ec1n qua quy\u1ec1n root ho\u00e0n to\u00e0n (d\u1ea5u nh\u1eafc l\u1ec7nh s\u1ebd chuy\u1ec5n th\u00e0nh #), ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n nhi\u1ec1u l\u1ec7nh li\u00ean t\u1ee5c m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i d\u00f9ng l\u1ec7nh n\u00e2ng quy\u1ec1n n\u1eefa.<\/span><\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\">L\u1ec7nh <strong>su<\/strong> c\u00f2n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 chuy\u1ec3n qua l\u1ea1i gi\u1eefa c\u00e1c user, c\u00fa ph\u00e1p <strong>su [user]<\/strong>, v\u00ed d\u1ee5 b\u1ea1n c\u00f3 2 user l\u00e0 user1 v\u00e0 user2, \u0111\u1ec3 chuy\u1ec3n qua l\u1ea1i c\u00e1c user t\u1eeb quy\u1ec1n root, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng l\u1ec7nh<strong> su user1<\/strong> v\u00e0 <strong>su user 2<\/strong>.<\/span><\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\">Khi th\u1ef1c hi\u1ec7n su \u0111\u1ec3 n\u00e2ng quy\u1ec1n l\u00eanh root, b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng password c\u1ee7a user root. T\u01b0\u01a1ng t\u1ef1, khi d\u00f9ng su \u0111\u1ec3 chuy\u1ec3n quy\u1ec1n qua user n\u00e0o, b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng password c\u1ee7a user \u0111\u00f3.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3596 \" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2018\/07\/linux-command-1.png\" alt=\"\" width=\"202\" height=\"93\" \/><\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">\u0110\u1ec3 tr\u1edf v\u1ec1 quy\u1ec1n user hi\u1ec7n t\u1ea1i, quy\u1ec1n tr\u01b0\u1edbc khi chuy\u1ec3n quy\u1ec1n ho\u1eb7c chuy\u1ec3n \u0111\u1ed5i user, b\u1ea1n d\u00f9ng l\u1ec7nh <strong>exit<\/strong>. B\u1ea1n l\u01b0u \u00fd l\u00e0 l\u1ec7nh <strong>exit<\/strong> s\u1ebd tho\u00e1t l\u1ea7n l\u01b0\u1ee3t qua t\u1eebng user m\u00e0 b\u1ea1n \u0111\u00e3 \u0111\u0103ng nh\u1eadp.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3597 \" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2018\/07\/linux-command-2.png\" alt=\"\" width=\"249\" height=\"190\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">M\u1eb7c \u0111\u1ecbnh, v\u1edbi c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh nh\u01b0 Ubuntu thu\u1ed9c h\u1ecd Debian, khi th\u1ef1c hi\u1ec7n c\u00e1c l\u1ec7nh, b\u1ea1n s\u1ebd s\u1eef d\u1ee5ng sudo, b\u1ea1n s\u1ebd kh\u00f4ng d\u00f9ng \u0111\u01b0\u1ee3c su v\u00ec user root m\u1eb7c \u0111\u1ecbnh kh\u00f4ng c\u00f3 password v\u00e0 kh\u00f4ng cho ph\u00e9p logon. \u0110\u1ec3 c\u00f3 th\u1ec3 d\u00f9ng l\u1ec7nh su, b\u1ea1n ph\u1ea3i \u0111\u1ed5i password cho user root.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh nh\u01b0 CentOS, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh su, l\u1ec7nh sudo th\u00f4ng th\u01b0\u1eddng s\u1ebd kh\u00f4ng s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">\u0110\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh sudo, c\u00e1c user s\u1ebd ph\u1ea3i \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong file \/etc\/sudoers<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">M\u1ed9t l\u1ec7nh kh\u00e1 \u0111\u1eb7t bi\u1ebft c\u1ee7a su v\u00e0 sudo \u0111\u00f3 l\u00e0 tr\u00ean c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh nh\u01b0 Ubuntu, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n l\u1ec7nh sudo su, l\u1ec7n n\u00e0y cho ph\u00e9p b\u1ea1n chuy\u1ec3n quy\u1ec1n sang root nh\u01b0 su tr\u00ean CentOS v\u00e0 \u0111\u1ee9ng \u1edf user root. Sau khi d\u00f9ng l\u1ec7nh n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c l\u1ec7nh m\u00e0 kh\u00f4ng c\u1ea7n d\u00f9ng \u0111\u1ebfn sudo n\u1eefa.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3598 \" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2018\/07\/linux-command-3.png\" alt=\"\" width=\"438\" height=\"119\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\"><strong>C\u00e1c l\u1ec7nh kh\u00e1c c\u00f3 li\u00ean quan khi b\u1ea1n t\u00ecm hi\u1ec3u b\u00e0i vi\u1ebft n\u00e0y:<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\"><strong>L\u1ec7nh t\u1ea1o user:<\/strong><\/span>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">C\u00fa ph\u00e1p: <strong>useradd\u00a0 [username c\u1ea7n t\u1ea1o]<\/strong><\/span><\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\">V\u00ed d\u1ee5: useradd user1, useradd user2,&#8230;<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\"><strong>L\u1ec7nh \u0111\u1ed5i password cho user:<\/strong><\/span>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">C\u00fa ph\u00e1p: <strong>passwd [user c\u1ea7n \u0111\u1ed5i password]<\/strong><\/span><\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\">V\u00ed d\u1ee5: passwd user1. passwrd user2,&#8230;<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: georgia, palatino, serif;\"><strong>L\u1ec7nh ki\u1ec3m tra xem b\u1ea1n \u0111ang \u1edf user n\u00e0o:<\/strong><\/span>\n<ul>\n<li><span style=\"font-family: georgia, palatino, serif;\">C\u00fa ph\u00e1p: <strong>whoami<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-family: georgia, palatino, serif;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3600  aligncenter\" src=\"https:\/\/www.engisv.info\/wp-content\/uploads\/2018\/07\/linux-command-5.png\" alt=\"\" width=\"414\" height=\"164\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif;\">Tr\u00ean \u0111\u00e2y l\u00e0 b\u00e0i vi\u1ebft gi\u00fap b\u1ea1n c\u00f3 kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux. Hy v\u1ecdng b\u00e0i vi\u1ebft s\u1ebd gi\u00fap \u00edch cho b\u1ea1n khi b\u1eaft \u0111\u1ea7u t\u00ecm hi\u1ec3u v\u1ec1 l\u1ec7nh v\u00e0 c\u00e1ch th\u1ee9c s\u1eed d\u1ee5ng Linux.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi nghe n\u00f3i \u0111\u1ebfn s\u1eed d\u1ee5ng Linux, nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn b\u1ecb \u00e1m \u1ea3nh do ph\u1ea3i s\u1eed d\u1ee5ng d\u00f2ng l\u1ec7nh, nh\u01b0ng n\u1ebfu n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux, s\u1ebd gi\u00fap b\u1ea1n b\u1edbt \u00e1m \u1ea3nh v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng l\u1ec7nh. Linux l\u00e0 kernel \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n Unix, tr\u00ean Linux, c\u00e1c k\u00fd t\u1ef1 hoa v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t r\u1ea5t r\u00f5 r\u00e0ng, k\u00fd t\u1ef1 &#8220;A&#8221; kh\u00e1c v\u1edbi &#8220;a&#8221;. K\u00fd t\u1ef1 hoa, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t trong c\u1ea3 c\u00e2u l\u1ec7nh, c\u00e1ch \u0111\u1eb7t t\u00ean cho t\u1ec7p tin (file),&hellip;<\/p>\n","protected":false},"author":2,"featured_media":3599,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"footnotes":""},"categories":[7,11],"tags":[31,47,63],"class_list":["post-2340","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc","category-nguon-mo","tag-centos","tag-linux","tag-ubuntu"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux - EngISV<\/title>\n<meta name=\"description\" content=\"S\u1eed d\u1ee5ng Linux, nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn b\u1ecb \u00e1m \u1ea3nh do ph\u1ea3i s\u1eed d\u1ee5ng d\u00f2ng l\u1ec7nh,nh\u01b0ng n\u1ebfu n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux, s\u1ebd gi\u00fap b\u1ea1n b\u1edbt \u00e1m \u1ea3nh v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng l\u1ec7nh.Linux l\u00e0 kernel \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n Unix, tr\u00ean Linux, c\u00e1c k\u00fd t\u1ef1 hoa v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t r\u1ea5t r\u00f5 r\u00e0ng, k\u00fd t\u1ef1 &quot;A&quot; kh\u00e1c v\u1edbi &quot;a&quot;. K\u00fd t\u1ef1 hoa, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t trong c\u1ea3 c\u00e2u l\u1ec7nh, c\u00e1ch \u0111\u1eb7t t\u00ean cho t\u1ec7p tin (file), th\u01b0 m\u1ee5c (directory)... V\u00ec v\u1eady khi th\u1ef1c hi\u1ec7n c\u00e1c c\u00e2u l\u1ec7nh v\u00e0 \u0111\u1eb7t t\u00ean ph\u1ea3i c\u1ef1c k\u1ef3 th\u1eadn trong trong v\u1ea5n \u0111\u1ec1 k\u00fd t\u1ef1 hoa th\u01b0\u1eddng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engisv.info\/?p=2340\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux - EngISV\" \/>\n<meta property=\"og:description\" content=\"S\u1eed d\u1ee5ng Linux, nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn b\u1ecb \u00e1m \u1ea3nh do ph\u1ea3i s\u1eed d\u1ee5ng d\u00f2ng l\u1ec7nh,nh\u01b0ng n\u1ebfu n\u1eafm \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 l\u1ec7nh tr\u00ean Linux, s\u1ebd gi\u00fap b\u1ea1n b\u1edbt \u00e1m \u1ea3nh v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng l\u1ec7nh.Linux l\u00e0 kernel \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n Unix, tr\u00ean Linux, c\u00e1c k\u00fd t\u1ef1 hoa v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t r\u1ea5t r\u00f5 r\u00e0ng, k\u00fd t\u1ef1 &quot;A&quot; kh\u00e1c v\u1edbi &quot;a&quot;. K\u00fd t\u1ef1 hoa, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t trong c\u1ea3 c\u00e2u l\u1ec7nh, c\u00e1ch \u0111\u1eb7t t\u00ean cho t\u1ec7p tin (file), th\u01b0 m\u1ee5c (directory)... 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