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Need help using sed command in shell script?

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Top Forums Shell Programming and Scripting Need help using sed command in shell script?
# 1  
Old 02-23-2009
Need help using sed command in shell script?
Hello,
i want to take the input from user and according to that variable's value search in file emp.lst. Here is what i came up with

Code:
echo -e "Enter string to be searched :\c"
read str

sed -n '/\$str/p' emp.lst

this is not working! any idea why?Thanks in advance! Smilie
# 2  
Old 02-23-2009
You should be using "grep" instead of "sed" for this purpose. Anyway, this works for me:

Code:
$ cat emp.lst
john reed
peter sullivan
pete blake
rob turner
$ cat em.sh
#!/usr/bin/bash

echo -e "Enter string to be searched :\c"
read str

sed -n "/$str/p" emp.lst
$ em.sh
Enter string to be searched :pete
peter sullivan
pete blake

This User Gave Thanks to rikxik For This Post:
paramad
# 3  
Old 02-23-2009
rikxik thanks! Smilie
yeah i should be using grep but my main intention was not to search the emp.lst my main intention of asking this question was how to use variable in sed
# 4  
Old 02-23-2009
Tools Hope this helps...
you can use a buffer tmp-file

echo "s/${str}/p/" > /tmp/buf_sed_file
sed -f /tmp/buf_sed_file <your text file>


bye

eg
# 5  
Old 02-23-2009
You could have just asked that Smilie
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