Posts Tagged ‘skills’

FreeBSD skills everday — 16

November 25, 2007 by ycg · Leave a Comment
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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>

FreeBSD skills everyday — 15

November 24, 2007 by ycg · Leave a Comment
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Need to remove all those ^M characters from a DOS file? Try         tr -d \r < dosfile > newfile                 — Originally by Dru <genesis@istar.ca>

FreeBSD skills erverday — 14

November 23, 2007 by ycg · Leave a Comment
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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 [...]

FreeBSD skills everyday — 13

November 22, 2007 by ycg · Leave a Comment
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Need to see your routing table? Type "netstat -rn". The entry with the G flag is your gateway.                 — Dru <genesis@istar.ca>

FreeBSD skills everyday — 12

November 18, 2007 by ycg · 1 Comment
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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 [...]

FreeBSD skills everyday — 11

November 17, 2007 by ycg · Leave a Comment
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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 [...]

FreeBSD skills everyday — 10

November 16, 2007 by ycg · Leave a Comment
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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.

FreeBSD skills everyday — 9

November 15, 2007 by ycg · Leave a Comment
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To find out the hostname associated with an IP address, use         dig -x IP_address                 — Dru <genesis@istar.ca>

FreeBSD skills everyday — 8

November 14, 2007 by ycg · Leave a Comment
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Need to see the calendar for this month? Simply type "cal".  To see the whole year, type "cal -y".                 — Dru <genesis@istar.ca>

FreeBSD skills everyday — 7

November 12, 2007 by ycg · Leave a Comment
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To change an environment variable in /bin/sh use:         $ VARIABLE="value"         $ export VARIABLE

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