Observer Life » skills http://observerlife.com To be a better man (Observer) Sun, 05 Sep 2010 16:21:09 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 FreeBSD skills everday — 16 http://observerlife.com/freebsd-skills-everday-16/ http://observerlife.com/freebsd-skills-everday-16/#comments Sun, 25 Nov 2007 07:32:21 +0000 ycg http://www.kedy.cn/blog/?p=331 Need to see which daemons are listening for connection requests? Use
"sockstat -4l" for IPv4, and "sockstat -l" for IPv4 and IPv6.
                — Dru <genesis@istar.ca>

]]> http://observerlife.com/freebsd-skills-everday-16/feed/ 0 FreeBSD skills everyday — 15 http://observerlife.com/freebsd-skills-everyday-15/ http://observerlife.com/freebsd-skills-everyday-15/#comments Sat, 24 Nov 2007 08:59:36 +0000 ycg http://www.kedy.cn/blog/?p=329 Need to remove all those ^M characters from a DOS file? Try

        tr -d \r < dosfile > newfile
                — Originally by Dru <genesis@istar.ca>

]]> http://observerlife.com/freebsd-skills-everyday-15/feed/ 0 FreeBSD skills erverday — 14 http://observerlife.com/freebsd-skills-erverday-14/ http://observerlife.com/freebsd-skills-erverday-14/#comments Thu, 22 Nov 2007 20:02:01 +0000 ycg http://www.kedy.cn/blog/?p=327 FreeBSD is started up by the program ‘init’.  The first thing init does when
starting multiuser mode (ie, starting the computer up for normal use) is to
run the shell script /etc/rc.  By reading /etc/rc, you can learn a lot about
how the system is put together, which again will make you more confident about
what happens when you do something with it.

]]> http://observerlife.com/freebsd-skills-erverday-14/feed/ 0 FreeBSD skills everyday — 13 http://observerlife.com/freebsd-skills-everyday-13/ http://observerlife.com/freebsd-skills-everyday-13/#comments Wed, 21 Nov 2007 18:12:47 +0000 ycg http://www.kedy.cn/blog/?p=326 Need to see your routing table? Type "netstat -rn". The entry with the G
flag is your gateway.
                — Dru <genesis@istar.ca>

]]> http://observerlife.com/freebsd-skills-everyday-13/feed/ 0 FreeBSD skills everyday — 12 http://observerlife.com/freebsd-skills-everyday-12/ http://observerlife.com/freebsd-skills-everyday-12/#comments Sun, 18 Nov 2007 06:55:53 +0000 ycg http://www.kedy.cn/blog/?p=325 Want to use sed(1) to edit a file in place?  Well, to replace every ‘e’ with
an ‘o’, in a file named ‘foo’, you can do:

        sed -i.bak s/e/o/g foo

And you’ll get a backup of the original in a file named ‘foo.bak’, but if you
want no backup:

        sed -i ” s/e/o/g foo

]]> http://observerlife.com/freebsd-skills-everyday-12/feed/ 1 FreeBSD skills everyday — 11 http://observerlife.com/freebsd-skills-everyday-11/ http://observerlife.com/freebsd-skills-everyday-11/#comments Fri, 16 Nov 2007 19:24:17 +0000 ycg http://www.kedy.cn/blog/?p=324 You can use aliases to decrease the amount of typing you need to do to get
commands you commonly use.  Examples of fairly popular aliases include (in
Bourne shell style, as in /bin/sh, bash, ksh, and zsh):

        alias lf="ls -FA"
        alias ll="ls -lA"
        alias su="su -m"

In csh or tcsh, these would be

        alias lf ls -FA
        alias ll ls -lA
        alias su su -m

To remove an alias, you can usually use ‘unalias aliasname’.  To list all
aliases, you can usually type just ‘alias’.

]]> http://observerlife.com/freebsd-skills-everyday-11/feed/ 2 FreeBSD skills everyday — 10 http://observerlife.com/freebsd-skills-everyday-10/ http://observerlife.com/freebsd-skills-everyday-10/#comments Thu, 15 Nov 2007 18:13:26 +0000 ycg http://www.kedy.cn/blog/?p=322 If you are running xterm, the default TERM variable will be ‘xterm’.  If you
set this environment variable to ‘xterm-color’ instead, a lot of programs will
use colors.  You can do this by

        TERM=xterm-color; export TERM

in Bourne-derived shells, and

        setenv TERM xterm-color

in csh-derived shells.

]]> http://observerlife.com/freebsd-skills-everyday-10/feed/ 0 FreeBSD skills everyday — 9 http://observerlife.com/freebsd-skills-everyday-9/ http://observerlife.com/freebsd-skills-everyday-9/#comments Wed, 14 Nov 2007 18:26:19 +0000 ycg http://www.kedy.cn/blog/?p=320 To find out the hostname associated with an IP address, use

        dig -x IP_address
                — Dru <genesis@istar.ca>

]]> http://observerlife.com/freebsd-skills-everyday-9/feed/ 0 FreeBSD skills everyday — 8 http://observerlife.com/freebsd-skills-everyday-8/ http://observerlife.com/freebsd-skills-everyday-8/#comments Tue, 13 Nov 2007 18:44:33 +0000 ycg http://www.kedy.cn/blog/?p=319 Need to see the calendar for this month? Simply type "cal".  To see the
whole year, type "cal -y".
                — Dru <genesis@istar.ca>

]]> http://observerlife.com/freebsd-skills-everyday-8/feed/ 0 FreeBSD skills everyday — 7 http://observerlife.com/freebsd-skills-everyday-7/ http://observerlife.com/freebsd-skills-everyday-7/#comments Mon, 12 Nov 2007 06:19:40 +0000 ycg http://www.kedy.cn/blog/?p=317 To change an environment variable in /bin/sh use:

        $ VARIABLE="value"
        $ export VARIABLE

]]> http://observerlife.com/freebsd-skills-everyday-7/feed/ 0