adding text to a file

Shell Programming and Scripting
1

Hi All

I am making a script in which.I have a problem i try to discribe.

File1 content need to be append in file 2 but such as if content already exist then dont add.

File1 IS Like this

myname
yourname
hername
hisname

File2 

%AddNameHere  myname yourname hername hisname
2

The file2 layout that you show does not reflect what you stated as "append" the name to the file, but I'm assuming append (meaning at the end of the file). I'm also assuming that each name is on a separate line in file2. Considering those assumptions, here is what I came up with for an example in bash:

#!/bin/bash

#
#       check arguments
#
if (( $# != 2 ))
then
        echo ""
        echo $0 : Invalid number of arguments $#
        echo ""
        exit 1
fi

#
#       declare variables (easier read)
#
declare file1=$1
declare file2=$2

#
#       read each line in file1, check if it exists in
#       file2, and if not, then append it.
#
cat $file1 | \
while read name
do
        egrep -s $name $file2
        if (( $? != 0 ))
        then
                echo $name >> $file2
                echo "added name "$name
        fi
done

let me know if this does it, or if my assumptions are wrong.

3

Non-standard. Use:

if [ $# -ne 2 ]

declare is non-standard and unnecessary.

UUOC and the backslash is unnecessary.

See above.

4

To: cfajohnson... thanks for taking the time to fix this up. I'll try and keep your advice in mind next time. ( Guess I should get your book, huh? :>D )

To: aliahsan81... just for completeness, here is the same script with cfajohnson suggestions.

#!/bin/bash

#
#       check arguments
#
if [ $# -ne 2 ]
then
        echo ""
        echo $0 : Invalid number of arguments $#
        echo ""
        exit 1
fi

#
#       declare variables (easier read)
#
file1=$1
file2=$2

#
#       read each line in file1, check if it exists in
#       file2, and if not, then append it.
#
while read name
do
        egrep -s $name $file2
        if [ $? != 0 ]
        then
                echo $name >> $file2
                echo "added name "$name
        fi
done < $file1