sed regex 替换多次出现

Question

The following sed expression is meant to operate on LaTeX source code and replace citet with citep :

sed -i -e 's/\\citet/\\citep/'

However, it seems that if citet appears twice in a row

\citet{bichot2011graph} \citet{DBLP:journals/corr/BulucMSSS13}

it replaces only the first occurrence and turns it into:

\citep{bichot2011graph} \citet{DBLP:journals/corr/BulucMSSS13}

Where is the mistake?

Answer 1

You need to use the global flag g :

sed -i -e 's/\\citet/\\citep/g'

See this reference for more detail.

g - Apply the replacement to all matches to the regexp, not just the first.