发布时间：2015-02-01 22:53:37

passwd --change password for current userpasswd usernamepasswd -d username -- remove password for a specific user, who will login without password......【阅读全文】

发布时间：2015-02-01 22:47:44

http://www.thegeekstuff.com/2010/06/chmod-command-examples/chmod ug+rwx  file.txt  --- give full access to user and groupchmod g-rwx file.txt     ---- revoke all access for the groupchmod -R ug+rwx dir   ---- apply the file permission recursely in the sub-directories.........【阅读全文】

发布时间：2015-02-01 22:42:51

rm -i file  -- before removing the file, show informationrm -r dir  -- remove the directory recursively......【阅读全文】

发布时间：2015-02-01 22:32:33

http://www.thegeekstuff.com/2009/12/4-ways-to-kill-a-process-kill-killall-pkill-xkill/]$ ps -ef | grep vimramesh 7243 7222 9 22:43 pts/2 00:00:00 vim$ kill -9 7243......【阅读全文】

发布时间：2015-02-01 22:28:43

df -kdf -h --- display output in human readable formaxdf -T --- to display what type of system......【阅读全文】