Replace

**:s/foo/bar/g**Find each occurrence of 'foo' (in the current line only), and replace it with 'bar'.

**:%s/foo/bar/g**Find each occurrence of 'foo' (in all lines), and replace it with 'bar'.

**:%s/foo/bar/gc**Change each 'foo' to 'bar', but ask for confirmation first.

**:%s/\\<foo\\>/bar/gc**Change only whole words exactly matching 'foo' to 'bar'; ask for confirmation.

**:%s/foo/bar/gci**Change each 'foo' (case insensitive due to the i flag) to 'bar'; ask for confirmation.:%s/foo\\c/bar/gc is the same because \\c makes the search case insensitive.This may be wanted after using :set noignorecase to make searches case sensitive (the default).

**:%s/foo/bar/gcI**Change each 'foo' (case sensitive due to the I flag) to 'bar'; ask for confirmation.:%s/foo\\C/bar/gc is the same because \\C makes the search case sensitive.This may be wanted after using :set ignorecase to make searches case insensitive.