Renaming files using node js

Question

I am quite new in using JS  so I will try to be as specific as I can      I have a folder with 260  png files with different country names  Afghanistan png  Albania png  Algeria png  etc  I have a  json file with a piece of code with all the ISO codes for each country like this            AF     Afghanistan        AL     Albania        DZ     Algeria                  I would like to rename the  png files with their ISO name in low-case  That means I would like to have the following input in my folder with all the  png images  af png  al png  dz png  etc    I was trying to research by myself how to do this with node js  but I am a little lost here and I would appreciate some clues a lot   Thanks in advance

User · Answer

For linux unix OS  you can use the shell syntax   const shell   require  child process   execSync     const currentPath    path to name png   const newPath    path to another name png    shell  mv   currentPath    newPath       That s it

User · Answer

You ll need to use fs for that  http   nodejs org api fs html  And in particular the fs rename   function   var fs   require  fs    fs rename   path to Afghanistan png     path to AF png   function err        if   err   console log  ERROR      err         Put that in a loop over your freshly-read JSON object s keys and values  and you ve got a batch renaming script   fs readFile   path to countries json   function error  data        if  error            console log error           return             var obj   JSON parse data       for var p in obj            fs rename   path to     obj p      png     path to     p     png   function err                if   err   console log  ERROR      err                            This assumes here that your  json file is trustworthy and that it s safe to use its keys and values directly in filenames  If that s not the case  be sure to escape those properly

User · Answer

For synchronous renaming use fs renameSync  fs renameSync   path to Afghanistan png     path to AF png

User · Answer

fs readdir path  callback  fs rename old new callback    Go through http   nodejs org api fs html  One important thing - you can use sync functions also   It will work like C program

[javascript] Renaming files using node.js

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