In Linux, the main directories as as follows:
|/||The root directory, the top-level directory in the FHS. All other directories are subdirectories of root, which is always mounted on some partition.
|/bin||Essential command line utilities. Should not be mounted separately; otherwise, it could be difficult to get to these utilities when using a rescue disk.
|/boot||Includes Linux startup files, including the Linux kernel. The default, 100MB, is usually sufficient for a typical modular kernel and additional kernels that you might install during the RHCE or RHCT exams.
|/dev||Hardware and software device drivers for everything from floppy drives to terminals. Do not mount this directory on a separate partition.
|/etc||contains the commands and the files that are necessary for the system administrator (files passwd, group, inittab, ld.so.conf, lilo.conf, etc.)
|/home||Home directories for almost every user.
|/lib||Program libraries for the kernel and various command line utilities. Do not mount this directory on a separate partition.
|/mnt||The mount point for removable media, including floppy drives, CD-ROMs, and Zip disks.
|/opt||Applications such as the WordPerfect or OpenOffice.org Office suites.
|/proc||Currently running kernel-related processes, including device assignments such as IRQ ports, I/O addresses, and DMA channels.
|/root||The home directory of the root user.
|/sbin||System administration commands. Don't mount this directory separately.
|/tmp||Temporary files. By default, Red Hat Enterprise Linux deletes all files in this directory periodically.
|/usr||Small programs accessible to all users. Includes many system administration commands and utilities.
|/var||Variable data, including log files and printer spools.
Plesk – /var/www/vhosts/
cPanel – /home/
Shared – /web/content/ or /www
Windows – data\websites
Restart Common Services
/etc/init.d/service mysqld restart – Restart mySQL
/etc/init.d/service mysqld stop – Stop mySQL
/etc/init.d/service mysqld start – Start mySQL
service mysqld restart – restrart mysql
cat /var/log/mysqld.log – view log files for mysql
/etc/init.d/service psa restart – Restart Plesk
/etc/init.d/service psa stop – Stop Plesk
/etc/init.d/service psa start – Start Plesk
/etc/init.d/service httpd restart – Restart apache
/etc/init.d/service httpd stop – Stop apache
/etc/init.d/httpd start – Start apache
/usr/local/apache2/bin/apachect1 configtest – test apache
/etc/init.d/qmail restart – Restart qmail
/etc/init.d/qmail stop – Stop qmail
/etc/init.d/qmail start – Start qmail
/var/qmail/bin/qmail-qstat – View Mail queue
service qmail status – To see is qmail is running
Service qmail Stop or Start – To rerun qmail
vi /etc/courier-imap/imapd – Increase the number of IMAP connections
increase MAXPERIP= # – default is 4, set to something like 30
/etc/init.d/courier-imap stop – once done you can then restart the Imap courier
/etc/init.d/courier-imap start – Start Imapi
/usr/local/psa/admin/bin/mailmng –start-service –mail-component=imap,pop3 – disable pop and imap
/etc/init.d/postfix restart – Restart postfix
/etc/init.d/postfix stop – Stop postfix
/etc/init.d/postfix start – Start postfix
cd /usr/local/apache2/conf/v-hosts/ – domain alias
rpm -qa | grep soap – to see if soap is installed
yum install php-soap – install SOAP
yum upgrade php-soap – upgrade SOAP