regex - Find and replace multiple pairs of chars -

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i have text file , use sed editor regex find , replace characters in it. say, a->b, g->h, r->d , e->q.

like this:

sed -i "s/a/b/g" file.html >nul sed -i "s/g/h/g" file.html >nul sed -i "s/r/d/g" file.html >nul sed -i "s/e/q/g" file.html >nul

all works fine. want combine single regex line. can i? after googling , reading lot refex, see no way right now. thanks!

tr command this: tr < file.html 'agre' 'bhdq'

but if you're asking how make commands run go:

sed -e "s/a/b/g" -e "s/g/h/g" -e "s/r/d/g" -e "s/e/q/g" file.html

or more if commands different:

sed -e "s/a/b/g" file.html | sed -e "s/g/h/g" |     sed -e "s/r/d/g" | sed -e "s/e/q/g"

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