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My shell script does not read .env vars on Ubuntu 24.02.

$ gnome-shell --version
GNOME Shell 46.0

This my script.

//The script
#!/bin/sh
set +x
set +e
source .env 
clear
echo "Running flash loan simulation"
echo "PRIVATE_KEY: $PRIVATE_KEY"
echo "SEPOLIA_RPC_URL $SEPOLIA_RPC_URL"
echo "line 9"
cat .env
forge clean
forge build --force

When I cat the .env file in the same directory as the script.

$ cat .env
SEPOLIA_EQUALIZER_LENDER=xxxxxxxxxxxxxxxxxxxxxxxxxx
SEPOLIA_RPC_URL=https://sepolia.infura.io/v3/xxxxxxxxxxxxxx
PRIVATE_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

The terminal output. Interestingly the cat command does not list PRIVATE_KEY here.

Running flash loan simulation
PRIVATE_KEY: 
SEPOLIA_RPC_URL 
line 9
SEPOLIA_EQUALIZER_LENDER=0x0837b2aCcF87De52a099409863CDb5f3588342AD
SEPOLIA_RPC_URL=https://sepolia.infura.io/v3/xxxxxxx
# PRIVATE_KEY= is not listed here despite being listed in the cat command above
[⠊] Compiling...4d6a4949fa623629e0ED6bd4Ecb78A8C847693
[⠢] Compiling 36 files with Solc 0.8.26
[⠆] Solc 0.8.26 finished in 1.06s
Compiler run successful!

And finally the files.

$ ls
cache  foundry.toml  lib  notes.txt  out  README.md  run.sh  script  src  test  wip.sh
$ ls -a
.  ..  cache  .env  foundry.toml  .git  .gitignore  lib  notes.txt  out  README.md  run.sh  script  src  test  wip.sh
$ ls -la
total 64
drwxrwxr-x  9 myuser myuser 4096 Oct  7 11:13 .
drwxrwxr-x  7 myuser myuser 4096 Oct  4 13:39 ..
drwxrwxr-x  2 myuser myuser 4096 Oct  7 11:13 cache
-rw-------  1 myuser myuser  195 Oct  6 16:37 .env
-rw-rw-r--  1 myuser myuser  377 Oct  6 13:15 foundry.toml
drwxrwxr-x  8 myuser myuser 4096 Oct  6 16:34 .git
-rw-rw-r--  1 myuser myuser  653 Oct  4 13:40 .gitignore
drwxrwxr-x  4 myuser myuser 4096 Oct  4 10:16 lib
-rw-rw-r--  1 myuser myuser  744 Oct  4 16:23 notes.txt
drwxrwxr-x 38 myuser myuser 4096 Oct  7 11:13 out
-rw-rw-r--  1 myuser myuser  980 Oct  4 10:16 README.md
-rwxrwxr-x  1 myuser myuser  628 Oct  7 11:04 run.sh
drwxrwxr-x  2 myuser myuser 4096 Oct  6 16:34 script
drwxrwxr-x  2 myuser myuser 4096 Oct  6 15:29 src
drwxrwxr-x  2 myuser myuser 4096 Oct  6 15:29 test
-rwxrwxr-x  1 myuser myuser  182 Oct  4 13:41 wip.sh

Made edits after comments below.

#!/bin/sh
set +x
set +e
. .env
echo "Running flash loan simulation"
echo "PRIVATE_KEY: $PRIVATE_KEY"
echo "SEPOLIA_RPC_URL $SEPOLIA_RPC_URL"
echo "line 9"
cat .env

I have now set the .env permissions to 777 and both files are in the same folder.

$ ls -la
total 68
drwxrwxr-x  9 myuser myuser 4096 Oct  7 12:09 .
drwxrwxr-x  7 myuser myuser 4096 Oct  4 13:39 ..
-rwxrwxrwx  1 myuser myuser  195 Oct  6 16:37 .env
-rwxrwxr-x  1 myuser myuser  163 Oct  7 12:26 run.sh

Running the script gives an error.

$ ./run.sh 
./run.sh: 4: .: .env: not found

Update round 2.

#!/bin/sh
set +x
set +e
#. .env -->.: .env: not found
#..env -->..env: not found
#. ./env -->cannot open ./env: No such file

echo "Running flash loan simulation"
echo "PRIVATE_KEY: $PRIVATE_KEY"
echo "SEPOLIA_RPC_URL $SEPOLIA_RPC_URL"
echo "line 9"
cat .env
Improve this question
7
  • 1
    1) try it without the "clear" to see if you get errors. 2) without an export, don't expect the invoked programs to see it. 3) is that C++ comment actually part of the script? if so, it will mess things up. Commented Oct 7, 2024 at 18:55
  • 1
    ... as well, source is a bashism - if your shebang is #!/bin/sh you should use . .env Commented Oct 7, 2024 at 19:21
  • Please see my updated script and error plus file structure above. Commented Oct 7, 2024 at 19:37
  • Oops my bad - since .env doesn't contain a slash, the shell will search for it on your PATH. Try . ./env instead. See for example bash script error: source: not found (POSIX sh is required to behave the same) Commented Oct 7, 2024 at 19:56
  • 1
    ... that should be . ./.env Commented Oct 7, 2024 at 20:40

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