wildcard in sed substitution


 
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# 1  
Old 02-01-2011
wildcard in sed substitution

I have a number of strings that I want to remove:
Code:
<b>Task: 100</b>
<b>Task: 1100 </b>
<b>Task: 2200 </b>

But the numbers in them can vary from 4, 5 8, digits in length. But, no alpha chars.
I tried this:
Code:
sed '/Task:/,//d' $file > tmpfile ; mv tmpfile $file

But it removed additional text on the line that I need.

How do I use a wildcard in sed?
Code:
sed 's/<b>Task:[*]</b>//' > tmpfile ; mv tmpfile $file


Last edited by Franklin52; 02-01-2011 at 10:57 AM.. Reason: Please use code tags, thank you
# 2  
Old 02-01-2011
One way:
Code:
sed '/<b>Task:/s/ [0-9]*//' file

# 3  
Old 02-01-2011
Thanks
# 4  
Old 03-04-2011
Hi Everyone,

I am trying to do this:

sed -i 's/exclude=kernel* iptables selinux* ganglia* torque* *el5_5*/exclude=kernel* iptables selinux* ganglia* torque*/g' /etc/yum.conf

But I know the * in the command is messing me up. Basically I am trying to remove the *el5_5* from the line in /etc/yum.conf

I also tried this:

sed -i 's/exclude=*/exclude=kernel\* iptables selinux\* \*el5_5\* ganglia\* torque\*/g' /etc/yum.conf

In this command I think it is the second half of the replace statement that is messed up. Additionally I thought the /* would negate the meaning and match it as a regular character not a special character.

Thanks
John
# 5  
Old 03-05-2011
Code:
$ ruby -ne 'print $_.gsub(/<b>.*?<\/b>/,"")' file

# 6  
Old 03-05-2011
* is a metacharacter, use \ to escape it.
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