Create a script that will open a file for editing

Question

Create a script that will open a file for editing

1.If no argument is given it will ask the user for a file name otherwise, it will open a file for editing.

1. If the file already exist it will be opened for editing.

2. If a file does not exist it will open a file with the following settings

   #!/bin/bash already written on it

default permissions will be updated to –rwx------

Answer 1

Assuming the editor is vi , you don't need a script. Just vi filename will do as you want. Then set umask to set files creation permission as you require.

However if you really want to script this:

input_file=${1}

## Check file exists

if [ ! -f ${input_file} ]
then
   ## Doesnt exist - create empty file and set permission

   > ${input_file}
   chmod 700 ${input_file}
fi

## Edit the file

vi ${input_file}