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trying to understand what sed is doing?

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Top Forums Shell Programming and Scripting trying to understand what sed is doing?
# 1  
Old 06-29-2009
trying to understand what sed is doing?
Can someone help me understand why

sed '/host/ s/$/QQQ/g' junk

is taking the file 'junk' which is this:

host Example_1
filename-"gfnwd.cfg";
hardware-ethernet-00:13:11:fd:7a:88;
fixed-address-10.10.6.19;
}
host Example_2
filename-"gfnwd_280.cfg";
hardware-ethernet-00:10:3d:14:30:ce;
fixed-address-10.10.6.59;
}
host Example_13
filename-"robnmic1.cfg";
hardware-ethernet-00:10:3d:12:9e:c8;
fixed-address-10.10.3.30;
}


and doing this:


QQQost Example_1
filename-"gfnwd.cfg";
hardware-ethernet-00:13:11:fd:7a:88;
fixed-address-10.10.6.19;
}
QQQost Example_2
filename-"gfnwd_280.cfg";
hardware-ethernet-00:10:3d:14:30:ce;
fixed-address-10.10.6.59;
}
QQQost Example_13
filename-"robnmic1.cfg";
hardware-ethernet-00:10:3d:12:9e:c8;
fixed-address-10.10.3.30;

What I'm trying to do is for every line that contains "host" append at the end of the line "QQQ". I thought that is what the $ means.

Any help would be appreciated.
# 2  
Old 06-29-2009
Works for me, try again.
# 3  
Old 06-29-2009
kubuntu@kubuntu-M6400:/$ sed '/host/ s/$/QQQ/g' junk
QQQost Example_1
filename-"gfnwd.cfg";
hardware-ethernet-00:13:11:fd:7a:88;
fixed-address-10.10.6.19;
}
QQQost Example_2
filename-"gfnwd_280.cfg";
hardware-ethernet-00:10:3d:14:30:ce;
fixed-address-10.10.6.59;
}
QQQost Example_13
filename-"robnmic1.cfg";
hardware-ethernet-00:10:3d:12:9e:c8;
fixed-address-10.10.3.30;
}
kubuntu@kubuntu-M6400:/$

I'm using Kubuntu 9.04 with sed version 4.1.5.

---------- Post updated at 12:07 PM ---------- Previous update was at 11:45 AM ----------

VERY Strange!!

I loaded a Fedora 11 box and did the same command. Works fine... It's starting to look like a Kubuntu bug...
Last edited by TheBigAmbulance; 06-29-2009 at 03:26 PM..
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