To add a user to your system bring up a terminal window and issue these commands:

 

To add a user use useradd [username]

then password the name by using passwd like

passwd [username]

All this must be carried out as super user

 

To become a super user just type su - and enter the root password.

Ex.

[digerati@rh9 /]$su -

password:

[digerati@rh9 root]# useradd scrote

[digerati@rh9 root]# passwd scrote

Changing password for user scrote.

New password:

Retype new password:

passwd: all authentication tokens updated successfully.

 

All done.

To set the time on a linux box to one of those goverment time servers use

ntpdate time-b.nist.gov

 

Ex.

[digerati@rh9 /]$ ntpdate time-b.nist.gov

To edit the password expirey level edit the /etc/login.def.

 

 

# Password aging controls:

#

# PASS_MAX_DAYS Maximum number of days a password may be used.

# PASS_MIN_DAYS Minimum number of days allowed between password changes.

# PASS_MIN_LEN Minimum acceptable password length.

# PASS_WARN_AGE Number of days warning given before a password expires.

#

PASS_MAX_DAYS 30

PASS_MIN_DAYS 0

PASS_MIN_LEN 5

PASS_WARN_AGE 7

To check what starts on start up do chkconfig [servicename]

or chkconfig --list to see whats going on

or do chkconfig [servicename] on for one that is off

EX # chkconfig ssh on

There are runs levels or boot modes that may need attention:

EX:postfix 0:off 1:off 2:on 3:on 4:on 5:on 6:off

Levels 5 is gui mode; 3 is shell boot mode, so anywhere from 2~5 is good.

To untar a file use tar -xvf [filename]

If its in tar.gz then first gunzip [filename] and then untar.

Make yourself a notes file to keep documentation on changes you made on your system or just general notes about commands and things.

 

I created a file called notes.txt at /var/notes.txt and when I want to add to it simply do this

 

 

[digerati@rh9 /]$ cat >> /var/notes.txt

type something and hit ctrl d when finished.

 

Since this >> appends to the file I like to add a # sign before the actual typing like:

 

 

[digerati@rh9 /]$ cat >> /var/notes.txt

#

type something and hit ctrl d when finished.

http://castaglia.proftpd.de/

 

Good place to get started.

 

http://proftpd.linux.co.uk/

 

I thought these links were a good thing to add for now.

Use custom icons with Apache directory listings

 

 

 

If you are running apache, you can replace the default icons used when a directory is listed with your own. The icons are usually in /usr/share/httpd/icons/, /var/www/icons, or in windows it will be under your apache directory under icons and I would suggest backing all of these up before you mess with them. you can do this quickly by typing:

 

# cp -r /var/www/icons /var/www/icons.bak

 

You can use the Get Info (Command-I in the Finder) command to view the icon for a certian type of file, then copy it and use Photoshop or something to save the icon as a gif. Then replace the default icon file with the one you have just created. Now when list a dirctory you should see your customized icon.

 

You can also add new types by edditing you httpd.conf file (/etc/httpd/httpd.conf). Add the line:

 

AddIcon [PathToIcon] [Extensions]

 

For example, if you want an icon to show up for disk images then add the line:

 

AddIcon /icons/diskimg.gif .dmg .cdr .smi

 

I would suggest adding these lines in with all of the others that are already in the httpd.conf file.

 

You can also comment out a few lines to protect them using the # sign in front.

 

Here is what my icon listing looks like.

 

AddIconByEncoding (CMP,/icons/compressed.gif) x-compress x-gzip

 

#AddIconByType (TXT,/icons/text.gif) text/*

#AddIconByType (IMG,/icons/image2.gif) image/*

AddIconByType (SND,/icons/sound2.gif) audio/*

AddIconByType (VID,/icons/movie.gif) video/*

 

#AddIcon /icons/binary.gif .bin .exe

AddIcon /icons/exe.gif .bin .exe .EXE

AddIcon /icons/msi.gif .msi .MSI .Msi

AddIcon /icons/dll.gif .dll .DLL .Dll

AddIcon /icons/ini.gif .ini .INI .Ini .inf .INF .Inf

AddIcon /icons/bat.gif .bat .BAT .Bat

AddIcon /icons/binhex.gif .hqx

AddIcon /icons/tar.gif .tar

AddIcon /icons/world2.gif .wrl .wrl.gz .vrml .vrm .iv

AddIcon /icons/compressed.gif .Z .z .tgz .gz

AddIcon /icons/a.gif .ps .ai .eps

#AddIcon /icons/layout.gif .shtml

#AddIcon /icons/text.gif .txt

AddIcon /icons/txt.gif .txt .TXT

AddIcon /icons/c.gif .c

AddIcon /icons/p.gif .pl .py

AddIcon /icons/f.gif .for

AddIcon /icons/dvi.gif .dvi

AddIcon /icons/msword.gif .doc .DOC

AddIcon /icons/msexcel.gif .xls .XLS .xlt

AddIcon /icons/dwg.gif .dwg .DWG

AddIcon /icons/ppt.gif .ppt .PPT

AddIcon /icons/zip.gif .zip .ZIP .dat .DAT .cab .CAB .Cab .cat .CAT

AddIcon /icons/msg.gif .msg

AddIcon /icons/msie.gif .html .htm

AddIcon /icons/pdf.gif .pdf

AddIcon /icons/bmp.gif .bmp .gif .jpg .jpeg

AddIcon /icons/uuencoded.gif .uu

AddIcon /icons/script.gif .conf .sh .shar .csh .ksh .tcl

AddIcon /icons/tex.gif .tex

AddIcon /icons/bomb.gif core

 

AddIcon /icons/back.gif ..

AddIcon /icons/hand.right.gif README

AddIcon /icons/folder.gif ^^DIRECTORY^^

AddIcon /icons/blank.gif ^^BLANKICON^^

 

#

# DefaultIcon is which icon to show for files which do not have an icon

# explicitly set.

#

DefaultIcon /icons/unknown.gif

 

See how I commented some and also added all types of extensions so that apache will not get ticky about it.

 

 

Here are what a few look like that I created and use.

[/url][url=http://www.thebatchfile.com/junk/list/]http://www.thebatchfile.com/junk/list/

You can add these in batch scripting or logon scripting to aid in the adding and deletion of printers.

 

add printer

rundll32 printui.dll,PrintUIEntry /in /n \\server1\1220C

 

delete printer

rundll32 printui.dll,PrintUIEntry /dn /n \\server1\PRT4

To add a user for ftp purpose only so they can log into their home dir and do nothing but upload and download.

 

use:

 

useradd -m -k /dev/null -s /sbin/nologin {username}

 

 

for web use - if your hosting a www site for them and only want to give them ftp access

 

useradd -d /var/www/html/{username} -m -k /dev/null -s /sbin/nologin {username}