Surround every line in a file using sed

To replace every line in a file you can use linux's built in sed utility:

For example given a file like this:

dkarter/backpack
junegunn/fzf
junegunn/fzf.vim
junegunn/vim-peekaboo
junegunn/gv.vim
terryma/vim-multiple-cursors
scrooloose/nerdtree
dyng/ctrlsf.vim
haya14busa/incsearch.vim
killphi/vim-legend
neomake/neomake

If we want to surround each line with Plug '$content_of_line' we can run the following command:

sed -e "s/\(.*\)/Plug '\1'/" .vimbundle.local

Output:

Plug 'dkarter/backpack'
Plug 'junegunn/fzf'
Plug 'junegunn/fzf.vim'
Plug 'junegunn/vim-peekaboo'
Plug 'junegunn/gv.vim'
Plug 'terryma/vim-multiple-cursors'
Plug 'scrooloose/nerdtree'
Plug 'dyng/ctrlsf.vim'
Plug 'haya14busa/incsearch.vim'
Plug 'killphi/vim-legend'
Plug 'neomake/neomake'

If the result is what we expected we can add -i flag to write the file in place, updating it with our changes:

sed -ie "s/\(.*\)/Plug '\1'/" .vimbundle.local

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