Shell Programming and Scripting

Hi All,

I am workingon below script, Where requirement is first copy the file with differnt name and than remove the specific keyword in the file after reading from the input file.

So I have to copy of file equal to the number of lines present in the input file and replace the specfic keyword.

Code:

 
#!/bin/bash
 
#Loop through the file
HSFILE=/home/Temp/Components.txt
for line in $HSFILE ;do
tmp=`ls *.cpp | awk -F"." '{ print $1 }'`
cp $tmp.cpp $tmp$(date +%F-%T).cpp
sed -i 's/URL/{print $1}/g' $tmp.cpp $tmp$(date +%F-%T).cpp
done

I am facing issue with the sed command as it is note taking the variable replacement in the file. It is replacing it as string in the file. I want to replace the value strored in $1 variable in the file.

try using double quotes in sed sed -i "<<code>>"

I have tried it but same issue..It is not replacing it.

Code:

 
sed -i "s/URL/$1/g" Monitor_Template2013-07-09-00:54:34.cpp

---------- Post updated at 03:02 AM ---------- Previous update was at 02:15 AM ----------

Hi,

I have strored the value in variabl;e and using double quotes to replace it in SED. But still it is not replacing it with value. It is just deleted the value in the file.

Code:

 
Url= awk -F":" '{print $1}' $HSFILE
echo $Url
sed -i "s/Url/$Url/g" <File>

It should work just fine. Could you run the following and paste the results here?

echo $Url ; echo "test: Url" | sed "s/Url/$Url/"

Above code snippet printing

Code:

 
 
test:

It seems like the $Url variable is empty.

This won't work:

Code:

Url= awk -F":" '{print $1}' $HSFILE

Try this instead:

Code:

Url=$(awk -F":" '{print $1}' $HSFILE)

1) You are not looping through any file. HSFILE will assume the string given, and that's it. Your for-loop-variable line also will assume exactly that value, plus it is not used anywhere.
2) Your tmp variable will assume many filenames given there's more than one .cpp file in your directory, which will make your cp cmd fail.
3) Why do you copy the file and then use the "in place" option of sed? Run the sed cmd on the original file, capturing it's output in the respective dated target file