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# 1  
Old 06-05-2011
Delete line contains pattern

Hi all,
I'm trying to delete line contains pattern from file using ex editor
I have tried something like this
Code:
 user@host ~ $/usr/bin/echo "/$pattern/d\nwq!"| /usr/bin/ex -s  file.txt

This line is from script
but it doesn't work
any idea
# 2  
Old 06-05-2011
Code:
printf '/%s/d\nwq' "$pattern" | ex -s infile

If I recall correctly, some versions of ex require something like this:

Code:
printf '/%s/d\nw\nq' "$pattern" | ex -s infile

# 3  
Old 06-05-2011
@radoulov
thanks , but both of them doesn't work any further idea
Code:
user@host ~ $ printf '/%s/d\nwq' "$pattern" | ex -s  file.txt
No previous regular expression
user@host ~ $ printf '/%s/d\nw\nq' "$pattern" | ex -s  file.txt
No previous regular expression

# 4  
Old 06-05-2011
The code assumes the variable pattern is defined ...

Code:
pattern=<your_search_string>
printf '/%s/d\nwq' "$pattern" | ex -s  file.txt

# 5  
Old 06-06-2011
@radoulov
Thanks it works

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