How to turn this command into a zsh function -

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This command is what I want to translate into a zsh function, which performs a global search and changes to a string: Find 

  ./type f -exec sed -i 's / string1 / string2 /' {} \;   
 I tried:  
  gr () {search / -type f -exec sed -i 's / $ 1 / $ 2 /' {} \; }   
 But this does not seem to work.  
  
 
 
 The obvious error is the wrong quote - as always  ' Expand in detail, use  " instead of what you want - and you also want to  global  flag to sed:  < Pre>  gr () {find ./type f -exec sed -i "s / $ 1 / $ 2 / g" {} \ |}   
 However, this Not very  zsh  - Stylish ... the following is better for reading small and IMHO:  
  gr () {sed -i "/ $ 1 / $ 2 / g "** / * (.)}   
     
  •   **  Searches from R, but does not follow the simulation (use  ***  if you want to)  
  •   (.)  Restricted to plain files

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