# Using "-cd" option of command line
**URL:** https://community.freefem.org/t/using-cd-option-of-command-line/483
**Category:** General Discussion
**Created:** [June 27, 2020, 3:10pm UTC](https://community.freefem.org/t/using-cd-option-of-command-line/483 "2020-06-27T15:10:30Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@arousta](https://community.freefem.org/u/arousta)
#### Post date: [June 27, 2020, 3:10pm UTC](https://community.freefem.org/t/using-cd-option-of-command-line/483/1 "2020-06-27T15:10:30Z")
I see there is a “-cd” option which FreeFem++ command takes.
I think it means that FreeFem first cd into that directory and then runs. But I couldn’t figure out how to use it.
E.g. I have these files in /home/ar/code:
main.edp, mesh.idp
where main.edp includes mesh.idp
Now I want to run from say /home/ar/dir/. I tried:
FreeFem++ -cd …/main.edp
But didn’t work. Also tried other variants, no success.
What is the correct way to use -cd?
---
### Author:  [@arousta](https://community.freefem.org/u/arousta)
#### Post date: [July 10, 2020, 12:53pm UTC](https://community.freefem.org/t/using-cd-option-of-command-line/483/2 "2020-07-10T12:53:45Z")
Well looked in the source and I think there is a bug in the file `src/Graphics/getprog-unix.hpp` , function:
> int getprog(char\* fn,int argc, char \*\*argv)
It doesn’t handle the file name variable `fn` correctly. For example we call `FreeFem++ -cd ../t.edp` , then it cds to `..` but doesn’t chop-off the directory and keeps the files name as `../t.edp` which should be `t.edp`. So I added one line and it fixed the problem:
```
if(i>0) {
char *dir= new char [l+1];
strcpy(dir,edpfilenamearg);
strcyp(fn,edpfilenamearg+i+1); // Add this line to fix
dir[i]=0;
int err=0;
if(verbosity>1)
cout << " chdir '" << dir <<"'"<< endl;
// FFCS: mingw64 API change
err=chdir(dir);
```
---
### Author:  [@prj](https://community.freefem.org/u/prj)
#### Post date: [July 10, 2020, 12:57pm UTC](https://community.freefem.org/t/using-cd-option-of-command-line/483/3 "2020-07-10T12:57:26Z")
Could you please submit a [pull request](https://github.com/FreeFem/FreeFem-sources/pulls)? Thanks in advance.
---
### Author:  [@arousta](https://community.freefem.org/u/arousta)
#### Post date: [July 11, 2020, 1:23pm UTC](https://community.freefem.org/t/using-cd-option-of-command-line/483/4 "2020-07-11T13:23:00Z")
Sure, done 🙂