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While read line loop

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# 1  
Old 01-19-2010
While read line loop
Hi I'm writing a bash script which will read an input file and look for occurrences of the current user ($USER) executing the script. When i find the occurrence of the username I take that line and append it to a file with a line number and bracket display next to line.

The input file has been called yy and contains env data.

the output file should contain output in the following form:

1) PWD=/home/users/bund.bash
2) USER=bund.bash
3) MAIL=/mail/bund.bash
4)..... etc etc etc


I have written the code but cant seem to get it to run....I believe there is an error with the syntax in the while loop. Many thanks in advance for any help.

Code:
 
#!/bin/bash
yy=$1
count=1
 
inputfile=$(grep $USER $yy)
 
while $inputfile | read line
do
 
        count=$((count+1))
        echo $count")" $line >> filesave
 
done


should the done end with done <yy perhaps??
# 2  
Old 01-19-2010
I didn't understand you correctly, but still some questions

Do you want to search for $USER in the yy file?
inputfile is a variable in your case not a file.

perhaps, you could try:

Code:
while read line
do
        found=$(grep $USER $line)
        if [ "$found" ]; then
          echo $count")" $line >> filesave
        fi
        count=$((count+1))
         
done < $yy

# 3  
Old 01-19-2010
@ anchal

yes i want to search for every time $USER is in the yy file and write output in the form:

1) data
2) data
3) data

etc

I see what you have done and I understand the code but when i try and run the script i get the error: $yy: ambiguous redirect
# 4  
Old 01-19-2010
what are you passing as $1? A filename with absolute path or if only filename then it must exists in the current dir.

can you show us the messages?
# 5  
Old 01-19-2010
yy=$1 and yes its in the current directory. Here is the complete code:

Code:

#!/bin/bash

yy=$1
count=1



while read line
do

        found=$(grep $USER $line)
        if [ "$found" ]; then

        echo $count")" $line >> filesave
        fi
        count=$((count+1))


done < $yy

filesave is also in the current directory and is an empty file but it has been created
# 6  
Old 01-19-2010
sorry,I did a mistake, dont you get grep error also?
try this
Code:
count=1



while read line
do

        found=$(echo $line | grep "$USER")
        if [ "$found" ]; then

        echo $count")" $line >> filesave
        fi
        count=$((count+1))


done < $1

# 7  
Old 01-19-2010
Post your input file between code tags.
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