{"id":9585,"date":"2015-06-29T06:00:14","date_gmt":"2015-06-29T10:00:14","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=9585"},"modified":"2015-11-10T08:37:50","modified_gmt":"2015-11-10T13:37:50","slug":"%e0%a6%87%e0%a6%89%e0%a6%a8%e0%a6%bf%e0%a6%95%e0%a7%8d%e0%a6%b8-%e0%a6%aa%e0%a6%be%e0%a6%b0%e0%a6%ae%e0%a6%bf%e0%a6%b6%e0%a6%a8-%e0%a6%93-%e0%a6%8f%e0%a6%95%e0%a7%8d%e0%a6%b8%e0%a7%87%e0%a6%b8","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=9585","title":{"rendered":"\u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u0983 \u09ab\u09be\u0987\u09b2 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u0993 \u098f\u0995\u09cd\u09b8\u09c7\u09b8 \u09ae\u09cb\u09a1 (Unix &#8211; File Permission \/ Access Modes)"},"content":{"rendered":"<p>\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae<\/p>\n<p>&nbsp;<\/p>\n<p>\u09ab\u09be\u0987\u09b2 \u0993\u09a8\u09be\u09b0\u09b6\u09bf\u09aa \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u0997\u09c1\u09b0\u09c1\u09a4\u09cd\u09ac\u09aa\u09c2\u09b0\u09cd\u09a3 \u0989\u09aa\u09be\u09a6\u09be\u09a8 \u09af\u09be \u09ab\u09be\u0987\u09b2 \u09b7\u09cd\u099f\u09cb\u09b0\u09c7\u09b0 \u09a8\u09bf\u09b0\u09be\u09aa\u09a6 \u0989\u09aa\u09be\u09df \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u09aa\u09cd\u09b0\u09df\u09cb\u099c\u09a8\u0964 \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995\u099f\u09bf \u09ab\u09be\u0987\u09b2\u09c7 \u09af\u09c7 \u098f\u099f\u09cd\u09b0\u09bf\u09ac\u09bf\u0989\u099f\u0997\u09c1\u09b2\u09cb \u09a5\u09be\u0995\u09c7 \u09b8\u09c7\u0997\u09c1\u09b2\u09cb \u09b9\u09b2,<\/p>\n<ul>\n<li>\u0993\u09a8\u09be\u09b0\u09c7\u09b0 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8,<\/li>\n<li>\u0997\u09cd\u09b0\u09c1\u09aa \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8,<\/li>\n<li>\u0985\u09a8\u09cd\u09af\u09be\u09a8\u09cd\u09af \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>\u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u0987\u09a8\u09a1\u09bf\u0995\u09c7\u099f\u09b0<\/h2>\n<p><strong>ls -l<\/strong> \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u09b8\u0982\u0995\u09cd\u09b0\u09be\u09a8\u09cd\u09a4 \u0985\u09a8\u09c7\u0995 \u09a4\u09a5\u09cd\u09af \u09a6\u09c7\u0996\u09be \u09af\u09be\u09df,<\/p>\n<hr \/>\n<pre>$ls -l \/home\/amrood<\/pre>\n<pre>-rwxr-xr-- 1 amrood\u00a0\u00a0 users 1024 Nov 2 00:10 myfile<\/pre>\n<pre>drwxr-xr--- 1 amrood\u00a0\u00a0 users 1024 Nov 2 00:10 mydir<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>read (r), write (w), execute (x) \u098f\u0987 \u0985\u09b0\u09cd\u09a1\u09be\u09b0 \u09ab\u09b2\u09cb \u0995\u09b0\u09c7<\/p>\n<ul>\n<li>\u09aa\u09cd\u09b0\u09a5\u09ae \u09a4\u09bf\u09a8 \u0995\u09cd\u09af\u09be\u09b0\u09c7\u0995\u09cd\u099f\u09be\u09b0 \u09ab\u09be\u0987\u09b2 \u0993\u09a8\u09be\u09b0\u09c7\u09b0 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8,<\/li>\n<li>\u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df \u09a4\u09bf\u09a8 \u0995\u09cd\u09af\u09be\u09b0\u09c7\u0995\u09cd\u099f\u09be\u09b0 \u0997\u09cd\u09b0\u09c1\u09aa \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u0986\u09b0<\/li>\n<li>\u09b6\u09c7\u09b7 \u09a4\u09bf\u09a8 \u0995\u09cd\u09af\u09be\u09b0\u09c7\u0995\u09cd\u099f\u09be\u09b0 \u09ac\u09be\u0995\u09bf \u09b8\u09ac \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>\u09ab\u09be\u0987\u09b2 \u098f\u0995\u09cd\u09b8\u09c7\u09b8 \u09ae\u09cb\u09a1<\/h2>\n<p>\u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8\u09c7\u09b0 \u09ac\u09bf\u09b2\u09cd\u09a1\u09bf\u0982 \u09ac\u09cd\u09b2\u0995 \u09b9\u09b2 \u098f\u0987 \u09a4\u09bf\u09a8\u099f\u09bf,<\/p>\n<ul>\n<li>\u09b2\u09c7\u0996\u09be<\/li>\n<li>\u09aa\u09dc\u09be<\/li>\n<li>\u098f\u0995\u09cd\u09b8\u09c7\u0995\u09bf\u0989\u099f \u0995\u09b0\u09be<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>\u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u098f\u0995\u09cd\u09b8\u09c7\u09b8 \u09ae\u09cb\u09a1<\/h2>\n<p>\u0985\u09a8\u09cd\u09af\u09be\u09a8\u09cd\u09af \u09ab\u09be\u0987\u09b2\u09c7\u09b0 \u09ae\u09a4 \u098f\u09a6\u09c7\u09b0\u0993 \u09ac\u09bf\u09b2\u09cd\u09a1\u09bf\u0982 \u09ac\u09cd\u09b2\u0995 \u098f\u0997\u09c1\u09b2\u09cb\u0983<\/p>\n<ul>\n<li>\u09b2\u09c7\u0996\u09be<\/li>\n<li>\u09aa\u09dc\u09be<\/li>\n<li>\u098f\u0995\u09cd\u09b8\u09c7\u0995\u09bf\u0989\u099f \u0995\u09b0\u09be<\/li>\n<\/ul>\n<p>\u09af\u09a6\u09bf\u0993 \u098f\u09a6\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 \u0995\u09bf\u099b\u09c1 \u09ae\u09cc\u09b2\u09bf\u0995 \u09aa\u09be\u09b0\u09cd\u09a5\u0995\u09cd\u09af \u0986\u099b\u09c7\u0964<\/p>\n<p>&nbsp;<\/p>\n<h2>\u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u099a\u09c7\u099e\u09cd\u099c \u0995\u09b0\u09be<\/h2>\n<p>\u09a6\u09c1\u099f\u09bf \u0989\u09aa\u09be\u09df\u09c7 <strong>chmod<\/strong> \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u098f\u099f\u09bf \u0995\u09b0\u09be \u09af\u09be\u09df,<\/p>\n<p>\u09b8\u09bf\u09ae\u09cd\u09ac\u09cb\u09b2\u09bf\u0995 \u09ae\u09cb\u09a1\u09c7 <strong>chmod<\/strong> \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7\u0983 \u099f\u09c7\u09b8\u09cd\u099f\u09ab\u09be\u0987\u09b2\u09c7 ls -1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09ab\u09be\u0987\u09b2\u09c7\u09b0 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8,<\/p>\n<hr \/>\n<pre>$ls-l testfile\r\n-rwxrwxr--1 amrood\u00a0\u00a0 users1024Nov200:10 testfile<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09af\u09be\u09b0 \u09ab\u09b2\u09c7 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u099a\u09c7\u099e\u09cd\u099c \u09a6\u09c7\u0996\u09a4\u09c7 \u09aa\u09be\u09ac,<\/p>\n<hr \/>\n<pre>$chmod o+wx testfile\r\n$ls -l testfile\r\n-rwxrwxrwx\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile\r\n$chmod u-x testfile\r\n$ls -l testfile\r\n-rw-rwxrwx\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile\r\n$chmod g=rx testfile\r\n$ls -l testfile\r\n-rw-r-xrwx\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09b8\u09bf\u0999\u09cd\u0997\u09c7\u09b2 \u09b2\u09be\u0987\u09a8\u09c7\u09b0 \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09b8\u09ae\u09a8\u09cd\u09ac\u09df\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7,<\/p>\n<hr \/>\n<pre>$chmod o+wx,u-x,g=rx testfile\r\n$ls -l testfile\r\n-rw-r-xrwx\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u098f\u09ac\u09b8\u09b2\u09bf\u0989\u099f \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 <strong>chmod<\/strong> \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7<\/h2>\n<p>\u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995\u099f\u09bf \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u098f\u0995\u099f\u09bf \u0995\u09b0\u09c7 \u098f\u09b8\u09be\u0987\u09a8\u09a1 \u09ad\u09cd\u09af\u09be\u09b2\u09c1 \u09a7\u09be\u09b0\u09a3 \u0995\u09b0\u09c7, \u098f\u0997\u09c1\u09b2\u09cb \u09ae\u09cb\u099f\u09be\u09ae\u09c1\u099f\u09bf \u098f\u09b0\u0995\u09ae,<\/p>\n<p>&nbsp;<\/p>\n<table style=\"height: 190px;\" width=\"473\">\n<tbody>\n<tr>\n<td><strong>\u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 <\/strong><\/td>\n<td width=\"75%\"><strong>\u0985\u0995\u09cd\u099f\u09be\u09b2 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u09b0\u09bf\u09aa\u09cd\u09b0\u09c7\u099c\u09c7\u09a8\u09cd\u099f\u09c7\u09b6\u09a8 <\/strong><\/td>\n<td><strong>\u09b0\u09c7\u09ab\u09be\u09b0\u09c7\u09a8\u09cd\u09b8 <\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>0<\/strong><\/td>\n<td>No permission<\/td>\n<td>&#8212;<\/td>\n<\/tr>\n<tr>\n<td><strong>1<\/strong><\/td>\n<td>Execute permission<\/td>\n<td>&#8211;x<\/td>\n<\/tr>\n<tr>\n<td><strong>2<\/strong><\/td>\n<td>Write permission<\/td>\n<td>-w-<\/td>\n<\/tr>\n<tr>\n<td><strong>3<\/strong><\/td>\n<td>Execute and write permission: 1 (execute) + 2 (write) = 3<\/td>\n<td>-wx<\/td>\n<\/tr>\n<tr>\n<td><strong>4<\/strong><\/td>\n<td>Read permission<\/td>\n<td>r&#8211;<\/td>\n<\/tr>\n<tr>\n<td><strong>5<\/strong><\/td>\n<td>Read and execute permission: 4 (read) + 1 (execute) = 5<\/td>\n<td>r-x<\/td>\n<\/tr>\n<tr>\n<td><strong>6<\/strong><\/td>\n<td>Read and write permission: 4 (read) + 2 (write) = 6<\/td>\n<td>rw-<\/td>\n<\/tr>\n<tr>\n<td><strong>7<\/strong><\/td>\n<td>All permissions: 4 (read) + 2 (write) + 1 (execute) = 7<\/td>\n<td>rwx<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>\u099f\u09c7\u09b8\u09cd\u099f \u09ab\u09be\u0987\u09b2 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0\u09c7\u09b0 \u0989\u09a6\u09be\u09b9\u09b0\u09a3,<\/p>\n<hr \/>\n<pre>$ls -l testfile\r\n-rwxrwxr--\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u098f\u09b0\u09ab\u09b2\u09c7 \u0986\u09ae\u09b0\u09be \u09af\u09c7 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u099a\u09c7\u099e\u09cd\u099c \u09a6\u09c7\u0996\u09a4\u09c7 \u09aa\u09be\u09ac,<\/p>\n<hr \/>\n<pre>$ chmod 755 testfile\r\n$ls -l testfile\r\n-rwxr-xr-x\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile\r\n$chmod 743 testfile\r\n$ls -l testfile\r\n-rwxr---wx\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile\r\n$chmod 043 testfile\r\n$ls -l testfile\r\n----r---wx\u00a0 1 amrood\u00a0\u00a0 users 1024\u00a0 Nov 2 00:10\u00a0 testfile<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u0993\u09a8\u09be\u09b0 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8<\/h2>\n<p>chown \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09ab\u09be\u0987\u09b2\u09c7\u09b0 \u0993\u09a8\u09be\u09b0\u09b6\u09bf\u09aa \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8 \u0995\u09b0\u09a4\u09c7,<\/p>\n<hr \/>\n<pre>$ chown user filelist<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0989\u09a6\u09be\u09b9\u09b0\u09a3,<\/p>\n<hr \/>\n<pre>$ chown amrood testfile\r\n$<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u098f\u099f\u09bf \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09ab\u09be\u0987\u09b2\u09c7\u09b0 \u0993\u09a8\u09be\u09b0\u0995\u09c7 <strong>amrood<\/strong> \u09a8\u09be\u09ae\u09c7 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09bf\u09a4 \u0995\u09b0\u09c7\u0964<\/p>\n<p>&nbsp;<\/p>\n<h2>\u0997\u09cd\u09b0\u09c1\u09aa \u0993\u09a8\u09be\u09b0 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8<\/h2>\n<p>\u098f\u099f\u09bf\u09b0 \u099c\u09a8\u09cd\u09af \u09af\u09c7 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09df,<\/p>\n<hr \/>\n<pre>$ chgrpgroup filelist<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0989\u09a6\u09be\u09b9\u09b0\u09a3,<\/p>\n<hr \/>\n<pre>$ chgrp special testfile\r\n$<\/pre>\n<hr \/>\n<p>\u09af\u09c7\u099f\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09ab\u09be\u0987\u09b2\u09c7\u09b0 \u0997\u09cd\u09b0\u09c1\u09aa <strong>special<\/strong> \u0997\u09cd\u09b0\u09c1\u09aa\u09c7 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09bf\u09a4 \u09b9\u09df\u09c7 \u09af\u09be\u09df\u0964<\/p>\n<p>&nbsp;<\/p>\n<h2>SUID \u0993 SGID \u09ab\u09be\u0987\u09b2 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8\u0983<\/h2>\n<p>\u098f\u09a7\u09b0\u09a8\u09c7\u09b0 \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u098f \u09a7\u09b0\u09a3\u09c7\u09b0 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u09b8\u09ae\u09cd\u09aa\u09b0\u09cd\u0995\u09c7 \u099c\u09be\u09a8\u09be \u09af\u09be\u09df,<\/p>\n<hr \/>\n<pre>$ ls -l \/usr\/bin\/passwd\r\n-r-sr-xr-x\u00a0 1\u00a0\u00a0 root\u00a0\u00a0 bin\u00a0 19031 Feb 7 13:47\u00a0 \/usr\/bin\/passwd*\r\n$<\/pre>\n<hr \/>\n<p>\u098f\u0996\u09be\u09a8\u09c7 SUID \u09ac\u09bf\u099f \u09b8\u09c7\u099f \u0986\u09b0 \u098f\u09b0 \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09b0\u09c1\u099f \u09a5\u09c7\u0995\u09c7 \u0986\u09b8\u09c7\u0964<\/p>\n<p>&nbsp;<\/p>\n<p>\u09af\u09c7\u0995\u09cb\u09a8\u09cb \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf\u09b0 \u099c\u09a8\u09cd\u09af SUID \u0993 SGID bits \u09b8\u09c7\u099f \u0995\u09b0\u09a4\u09c7 \u09a8\u09bf\u099a\u09c7\u09b0 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09aa\u09cd\u09b0\u09df\u09cb\u0997 \u0995\u09b0\u09be \u09af\u09c7\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7,<\/p>\n<hr \/>\n<pre>$ chmod ug+s dirname\r\n$ ls -l\r\ndrwsr-sr-x 2 root root\u00a0 4096 Jun 19 06:45 dirname\r\n$<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae &nbsp; \u09ab\u09be\u0987\u09b2 \u0993\u09a8\u09be\u09b0\u09b6\u09bf\u09aa \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u0997\u09c1\u09b0\u09c1\u09a4\u09cd\u09ac\u09aa\u09c2\u09b0\u09cd\u09a3 \u0989\u09aa\u09be\u09a6\u09be\u09a8 \u09af\u09be \u09ab\u09be\u0987\u09b2 \u09b7\u09cd\u099f\u09cb\u09b0\u09c7\u09b0 \u09a8\u09bf\u09b0\u09be\u09aa\u09a6 \u0989\u09aa\u09be\u09df \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u09aa\u09cd\u09b0\u09df\u09cb\u099c\u09a8\u0964 \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995\u099f\u09bf \u09ab\u09be\u0987\u09b2\u09c7 \u09af\u09c7 \u098f\u099f\u09cd\u09b0\u09bf\u09ac\u09bf\u0989\u099f\u0997\u09c1\u09b2\u09cb \u09a5\u09be\u0995\u09c7 \u09b8\u09c7\u0997\u09c1\u09b2\u09cb \u09b9\u09b2, \u0993\u09a8\u09be\u09b0\u09c7\u09b0 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8, \u0997\u09cd\u09b0\u09c1\u09aa \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8, \u0985\u09a8\u09cd\u09af\u09be\u09a8\u09cd\u09af \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 &nbsp; \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u0987\u09a8\u09a1\u09bf\u0995\u09c7\u099f\u09b0 ls -l \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09aa\u09be\u09b0\u09ae\u09bf\u09b6\u09a8 \u09b8\u0982\u0995\u09cd\u09b0\u09be\u09a8\u09cd\u09a4 \u0985\u09a8\u09c7\u0995 \u09a4\u09a5\u09cd\u09af \u09a6\u09c7\u0996\u09be \u09af\u09be\u09df, $ls -l \/home\/amrood -rwxr-xr&#8211; 1 amrood\u00a0\u00a0 users 1024 Nov 2 &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=9585\">Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1231],"tags":[1237,1236,1262,1261,1662],"class_list":["post-9585","post","type-post","status-publish","format-standard","hentry","category-----linux-and-unix","tag-unix","tag-1236","tag-1262","tag-1261","tag-1662","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":9577,"url":"http:\/\/bangla.sitestree.com\/?p=9577","url_meta":{"origin":9585,"position":0},"title":"\u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u0983 \u09ab\u09be\u0987\u09b2 \u09ac\u09cd\u09af\u09ac\u09b8\u09cd\u09a5\u09be\u09aa\u09a8\u09be (Unix &#8211; File Management)","author":"Author-Check- Article-or-Video","date":"June 28, 2015","format":false,"excerpt":"\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae \u00a0 \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7 \u09b8\u09ac \u09a1\u09be\u099f\u09be \u09ab\u09be\u0987\u09b2\u09c7 \u09b8\u099c\u09cd\u099c\u09bf\u09a4 \u09a5\u09be\u0995\u09c7\u0964 \u09b8\u09ac \u09ab\u09be\u0987\u09b2 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf\u09a4\u09c7 \u09b8\u09be\u099c\u09be\u09a8\u09cb \u09a5\u09be\u0995\u09c7\u0964 \u0986\u09ac\u09be\u09b0 \u09b8\u09c7\u0987 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u098f\u0995\u099f\u09be \u099f\u09cd\u09b0\u09bf-\u09ae\u09a4\u09a8 \u0995\u09be\u09a0\u09be\u09ae\u09cb, \u09af\u09be\u09b0 \u09a8\u09be\u09ae \u09ab\u09be\u0987\u09b2 \u09b8\u09bf\u09b8\u09cd\u099f\u09c7\u09ae, \u098f\u09a4\u09c7 \u09b8\u09be\u099c\u09be\u09a8\u09cb \u09a5\u09be\u0995\u09c7\u0964 \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u09c7 \u0995\u09be\u099c \u0995\u09b0\u09be\u09b0 \u09b8\u09ae\u09df \u09aa\u09c1\u09b0\u09cb \u09b8\u09ae\u09df\u099f\u09be \u0995\u09cb\u09a8\u0993 \u09a8\u09be \u0995\u09cb\u09a8\u0993 \u09ab\u09be\u0987\u09b2 \u09a8\u09bf\u09df\u09c7 \u0995\u09be\u099c \u0995\u09b0\u09a4\u09c7 \u09b9\u09df\u0964 \u098f\u0987 \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2\u09c7 \u09a6\u09c7\u0996\u09be\u09a8\u09cb \u09b9\u09ac\u09c7 \u0995\u09c0\u09ad\u09be\u09ac\u09c7 \u09ab\u09be\u0987\u09b2 \u09a4\u09c8\u09b0\u09bf \u0993\u2026","rel":"","context":"In &quot;\u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f\u09ac\u0982 \u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0964 Linux and Unix&quot;","block_context":{"text":"\u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f\u09ac\u0982 \u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0964 Linux and Unix","link":"http:\/\/bangla.sitestree.com\/?cat=1231"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9667,"url":"http:\/\/bangla.sitestree.com\/?p=9667","url_meta":{"origin":9585,"position":1},"title":"\u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8 &#8211; \u0995\u09bf\u099b\u09c1 \u09aa\u09cd\u09b0\u09af\u09bc\u09cb\u099c\u09a8\u09c0\u09af\u09bc \u0995\u09ae\u09be\u09a8\u09cd\u09a1 (Unix &#8211; Useful Commands)","author":"Author-Check- Article-or-Video","date":"July 12, 2015","format":false,"excerpt":"\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae \u00a0 \u098f\u0987 \u0995\u09c1\u0987\u0995 \u0997\u09be\u0987\u09a1\u09c7 \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1, \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u0993 \u09b8\u0982\u0995\u09cd\u09b7\u09bf\u09aa\u09cd\u09a4 \u09ac\u09bf\u09ac\u09b0\u09a3 \u09a4\u09c1\u09b2\u09c7 \u09a7\u09b0\u09be \u09b9\u09ac\u09c7,\u098f\u09b0\u099a\u09c7\u09df\u09c7 \u09ac\u09bf\u09b8\u09cd\u09a4\u09be\u09b0\u09bf\u09a4 \u099c\u09be\u09a8\u09a4\u09c7 \u09b9\u09b2\u09c7 \u09af\u09c7 \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7 \u09a4\u09be \u09b9\u09b2, $man command \u00a0 \u09af\u09be\u0987 \u09b9\u09cb\u0995, \u098f\u0996\u09be\u09a8\u09c7 \u0995\u09c1\u0987\u0995 \u0997\u09be\u0987\u09a1\u099f\u09bf \u09a6\u09c7\u09df\u09be \u09b9\u09b2\u0964 \u09ab\u09be\u0987\u09b2 \u098f\u09ac\u0982 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf\u09b0 \u099c\u09a8\u09cd\u09af \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u09a4\u09c8\u09b0\u09bf \u0993 \u09ab\u09be\u0987\u09b2 \u09a8\u09bf\u09df\u09a8\u09cd\u09a4\u09cd\u09b0\u09a3 \u0995\u09b0\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u09af\u09c7\u09b8\u09ac \u0995\u09ae\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be\u2026","rel":"","context":"In &quot;\u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f\u09ac\u0982 \u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0964 Linux and Unix&quot;","block_context":{"text":"\u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f\u09ac\u0982 \u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0964 Linux and Unix","link":"http:\/\/bangla.sitestree.com\/?cat=1231"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9562,"url":"http:\/\/bangla.sitestree.com\/?p=9562","url_meta":{"origin":9585,"position":2},"title":"\u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8\u0983 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u09ac\u09cd\u09af\u09ac\u09b8\u09cd\u09a5\u09be\u09aa\u09a8\u09be (Unix folder\/directory Management)","author":"Author-Check- Article-or-Video","date":"June 28, 2015","format":false,"excerpt":"\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae \u00a0 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u09b9\u09b2 \u098f\u0995\u099f\u09bf \u09ab\u09be\u0987\u09b2 \u09af\u09be\u09b0 \u09aa\u09cd\u09b0\u09a7\u09be\u09a8 \u0995\u09be\u099c \u09b9\u09b2 \u09ab\u09be\u0987\u09b2\u09a8\u09c7\u09ae \u0993 \u098f\u09b0\u0995\u09ae \u0985\u09a8\u09cd\u09af\u09be\u09a8\u09cd\u09af \u09a4\u09a5\u09cd\u09af \u09b2\u09bf\u09aa\u09bf\u09ac\u09a6\u09cd\u09a7 \u09b0\u09be\u0996\u09be\u0964 \u09b8\u0995\u09b2 \u09ab\u09be\u0987\u09b2, \u09a4\u09be \u09af\u09c7\u09ae\u09a8\u0987 \u09b9\u09cb\u0995 \u09b8\u09be\u09a7\u09be\u09b0\u09a3, \u09ac\u09bf\u09b6\u09c7\u09b7 \u09ac\u09be \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf\u09b0, \u09a4\u09be \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf\u09a4\u09c7 \u09b8\u0982\u09b0\u0995\u09cd\u09b7\u09bf\u09a4 \u09a5\u09be\u0995\u09c7\u0964 \u09ab\u09be\u0987\u09b2 \u0993 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u09ac\u09cd\u09af\u09ac\u09b8\u09cd\u09a5\u09be\u09aa\u09a8\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u098f\u0995\u099f\u09bf \u0995\u09cd\u09b0\u09ae\u09ac\u09bf\u09a8\u09cd\u09af\u09be\u09b8\u0997\u09a4 \u0995\u09be\u09a0\u09be\u09ae\u09cb \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7\u0964 \u098f\u0987 \u0995\u09be\u09a0\u09be\u09ae\u09cb\u0995\u09c7 \u09a1\u09bf\u09b0\u09c7\u0995\u09cd\u099f\u09b0\u09bf \u099f\u09cd\u09b0\u09bf \u09ac\u09b2\u09c7\u0964 \u098f\u0987 \u099f\u09cd\u09b0\u09bf\u09a4\u09c7\u2026","rel":"","context":"In &quot;Root&quot;","block_context":{"text":"Root","link":"http:\/\/bangla.sitestree.com\/?cat=1"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9544,"url":"http:\/\/bangla.sitestree.com\/?p=9544","url_meta":{"origin":9585,"position":3},"title":"\u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8 : \u09b6\u09c1\u09b0\u09c1\u09b0 \u0995\u09a5\u09be (Unix &#8211; Getting Started)","author":"Author-Check- Article-or-Video","date":"June 26, 2015","format":false,"excerpt":"\u09b0\u09bf\u09a6\u0993\u09df\u09be\u09a8 \u09ac\u09bf\u09a8 \u09b6\u09be\u09ae\u09c0\u09ae \u00a0 \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0995\u09bf ? \u0987\u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09bf\u0982 \u09b8\u09bf\u09b8\u09cd\u099f\u09c7\u09ae \u09b9\u09b2 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