sed snippets for working with json for ELK

Remove enclosing brackets
        sed -i 's/\(\[\|\]\)//g' $file
Add a new line after closing brace and comma        
        sed -i 's/\}\,/}\,\n/g' $file
Add index with type
        sed -i 's/{/{"index":{"_index":"<index_name>","_type":"<type>"}}\n{/g' $file
Replace all spaces between two words with underscores
        sed -i -e 's/\(\w\)\s\(\w\)/\1_\2/g' $file
Add a new line at the end of the file
        sed -i -e '$a\' $file