使用sed和find插入文件内容

Question

How can I add something ex:

idea before </svg> in all svg files  ?

find -name "*.svg" -exec sed -i s/"</svg>"/"idea</svg>"/g {} \;

It doesn't work also with

find -name "*.svg" -exec sed -i s|"</svg>"|"idea</svg>"/g {} \;

Answer 1

Your embedded slashes are causing sed confusion:

sed -i s/"</svg>"/"idea</svg>"/g    ##wrong##

Pick a delimiter that will NOT causing problems. Put the whole thing in quotes.

sed -i "s=</svg>=idea</svg>=g"

Answer 2

sed is a line editor and sed -i.old takes an input file to modify in place and save a copy to a .old file. We have to match </svg> and replace it with 'idea' and put the matched part back ( \\1 )

sed -i.old 's/\(\<\/svg\>\)/idea\1/g' *.svg

(Notice we don't need find for this, giving *.svg to sed should suffice.)