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Loop question

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# 8  
Old 04-12-2005
just another quick question, how would i incorporate this with the "grep" command say I only wanted to grab lines that contained a certain phrase and store each line to a variable?

Code:
#!/bin/sh

while read text_line; do
echo $text_line;
done < $FILE

# 9  
Old 04-12-2005
Code:
#! /bin/ksh

grep "hello there" $file | \
while read text_line
do
     echo $text_line;
done

exit 0

# 10  
Old 04-13-2005
got another question, say i wanted to do the same thing but i wanted to start reading from a file starting from a line that contains a certain string, how can i do so?


Code:
#!/bin/sh
SOMESTRING="some string"

while read text_line; do
echo $text_line;
done < $FILE

how can i start reading the file from the line which has $SOMESTRING
# 11  
Old 04-13-2005
Quote:
Originally Posted by strike
got another question, say i wanted to do the same thing but i wanted to start reading from a file starting from a line that contains a certain string, how can i do so?


Code:
#!/bin/sh
SOMESTRING="some string"

while read text_line; do
echo $text_line;
done < $FILE

how can i start reading the file from the line which has $SOMESTRING
Code:
#!/bin/sh
SOMESTRING="some string"

sed "/${SOMESTRING}/,$p" ${FILE} | while read text_line; do
   echo $text_line;
done

# 12  
Old 04-13-2005
thanks for that, just curious what does the ",$p" do?
also i tried combining "sed" with "grep" in this example;
Code:
#!/bin/sh
SOMESTRING="some string"

sed "/${SOMESTRING}/,$p" ${FILE} | grep "hello there" $FILE | while read text_line; do
   echo $text_line;
done

in other words start reading the file starting from the line containing SOMESTRING and get the lines which contain "hello there" after that. Is this legal?
i tried it and get this error:
Code:
sed -e expression #1, char 88:Unexpected `,'

# 13  
Old 04-13-2005
ooops - sorry - forgot something:

Quote:
Originally Posted by vgersh99
Code:
#!/bin/sh
SOMESTRING="some string"

sed "/${SOMESTRING}/,\$p" ${FILE} | while read text_line; do
   echo $text_line;
done

# 14  
Old 04-13-2005
Quote:
Originally Posted by strike
thanks for that, just curious what does the ",$p" do?
also i tried combining "sed" with "grep" in this example;
Code:
#!/bin/sh
SOMESTRING="some string"

sed "/${SOMESTRING}/,$p" ${FILE} | grep "hello there" $FILE | while read text_line; do
   echo $text_line;
done

in other words start reading the file starting from the line containing SOMESTRING and get the lines which contain "hello there" after that. Is this legal?
i tried it and get this error:
Code:
sed -e expression #1, char 88:Unexpected `,'

Code:
#!/bin/sh
SOMESTRING="some string"

sed "/${SOMESTRING}/,\${/hello there/p;}" ${FILE} | while read text_line; do
   echo $text_line;
done
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