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Deleting a line from a file with sed and awk?

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# 1  
Old 08-20-2009
Deleting a line from a file with sed and awk?
cat file.txt
Code:
fvnuiehuewf
ruevhxncvkjrh
zxjvurhfuwe
jkhvBEGINvfnvf
ijrgioe

Trying to delete a line that has the pattern "BEGIN"

cat sedtest
Code:
filename=file.txt
pattern=BEGIN

sed "/^$pattern/d" "$filename"

# 2  
Old 08-20-2009
Code:
sed "/$pattern/d" file

# 3  
Old 08-20-2009
Quote:
Originally Posted by danmero
Code:
sed "/$pattern/d" file

Thank you.
How can I save this output in a variable and print that result (from variable)?
# 4  
Old 08-20-2009
Code:
# VAR=$(sed "/$pattern/d" file)
# echo $VAR
fvnuiehuewf ruevhxncvkjrh zxjvurhfuwe ijrgioe
# echo "$VAR"
fvnuiehuewf
ruevhxncvkjrh
zxjvurhfuwe
ijrgioe

# 5  
Old 08-21-2009
Quote:
Originally Posted by danmero
Code:
# VAR=$(sed "/$pattern/d" file)
# echo $VAR
fvnuiehuewf ruevhxncvkjrh zxjvurhfuwe ijrgioe
# echo "$VAR"
fvnuiehuewf
ruevhxncvkjrh
zxjvurhfuwe
ijrgioe

How to print the result using sed and pipe "|" ?
# 6  
Old 08-21-2009
Code:
#!/usr/bin/bash
filename=file.txt
pattern=BEGIN
cat "$filename" | sed "/$pattern/d"

# 7  
Old 08-21-2009
Quote:
Originally Posted by Leo Gutierrez
Code:
#!/usr/bin/bash
filename=file.txt
pattern=BEGIN
cat "$filename" | sed "/$pattern/d"

How to change the contents of that file?That means deleting the line with "BEGIN" pattern from the file?
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