Script for searching a pattern in 5 files and deleting the patterns given

Shell Programming and Scripting
1

Hi All,

I have written the below script that searches for the pattern in a file and delete them if present. please can some one have a look and suggest the changes in the script.

#!bin/sh

# The pattern that user want to add to the files

echo "Enter the pattern of the redirect"
read value

# check if the user has provided a valid pattern

if [-z "$value"] ; then
echo "You have not entered the pattern" ; exit 1

# If a pattern is entered by the User
# Searches the pattern and deletes the pattern if present in file (file 1) <filename 1>

mkdir /path/dred1
elif [grep "$value" <filename 1> > /path/dred1 && $? == 0] ; then
rm -r /path/dred1
echo "Pattern exist in <filename 1>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 1> > /path/olist
/path/olist > <filename 1>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred1
echo "Pattern does not exist in <filename 1>"
fi

# Pattern to be searched in (file 2) <filename 2> and delete it if present

mkdir /path/dred2
elif [grep "$value" <filename 2> > /path/dred2 && $? == 0] ; then
rm -r /path/dred2
echo "Pattern exist in <filename 2>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 2> > /path/olist
/path/olist > <filename 2>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred2
echo "Pattern does not exist in <filename 2>"
fi

# Pattern to be searched in (file 3) <filename 3> and delete it if present

mkdir /path/dred3
elif [ grep "$value" <filename 3> > /path/dred3 && $? == 0] ; then
rm -r /path/dred3
echo "Pattern exist in <filename 3>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 3> > /path/olist
/path/olist > <filename 3>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred3
echo "Pattern does not exist in <filename 3>"
fi

# Pattern to be searched in <filename 4> <filename 4> and delete it if present

mkdir /path/dred4
elif [grep "$value" <filename 4> > /path/dred4 && $? == 0] ; then
rm -r /path/dred4
echo "Pattern exist in <filename 4>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 4> > /path/olist
/path/olist > <filename 4>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred4
echo "Pattern does not exist in <filename 4>"
fi

# Pattern to be searched in <filename 5> <filename 5> and delete it if present

mkdir /path/dred5
elif [grep "$value" <filename 5> > /path/dred5 && $? == 0] ; then
rm -r /path/dred5
echo "Pattern exist in <filename 5>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 5> > /path/olist
/path/olist > <filename 5>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred5
echo "Pattern does not exist in <filename 5>"
fi

# Close loop for outer loop
fi

Next time use CODE-tags when posting code, data or logs to enhance readability and to preserve formatting like indention etc., ty.

Thanks and Regards,
Shazin

2

It should be easier if you post small samples of your input files and and explain what exactly you're trying to achieve.

3

Hi,

I am just trying to search for a word in a file and delete that complete line from the file if that word is present.

Cheers,
Shazin

---------- Post updated at 08:11 PM ---------- Previous update was at 08:06 PM ----------

Hi,

It can also be like this if we take it for a single file:

#!bin/sh

# The pattern that user want to add to the files

echo "Enter the pattern of the redirect"
read value

# check if the user has provided a valid pattern

if [-z "$value"] ; then
echo "You have not entered the pattern" ; exit 1

# If a pattern is entered by the User
# Searches the pattern and deletes the pattern if present in file (file 1) <filename 1>

mkdir /path/dred1
elif [grep "$value" <filename 1> > /path/dred1 && $? == 0] ; then
rm -r /path/dred1
echo "Pattern exist in <filename 1>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 1> > /path/olist
/path/olist > <filename 1>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred1
echo "Pattern does not exist in <filename 1>"
fi
fi

Please advise
Shazin

4

This seems to be a duplicate post of:

http://www.unix.com/shell-programming-scripting/115272-searching-pattern-file-deleting-th-ewhole-line-containing-pattern.html

5

Yes,
it is. Continue here.
Thread closed.