WHILE DO READ cannot open file directed in, even though it exists?

Question

Running into a weird issue while running a docker container (Ubuntu). I copy in some scripts, those scripts should run read a file line by line and execute a command.

When I type out the commands in the shell, it works as I expect. When I have the exact commands in a .sh file, it fails. I've tried every iteration of While read, IFS, changing file permissions, checking spaces, delimiters, etc. Cant seem to make it work.

I'm sure is something simple, but I have yet to find it.

My script:

while read LINE;
    do echo "$LINE";
done < "/megacmd/syncs"

Contents of syncs file:

$ cat syncs
sourcedir1 destdir1
sourcedir2 destdir2
sourcedir3 destdir3

Output when running the script:

# pwd
/megacmd
# ls
exclude.sh  excludes  init.sh  sync.sh  sync2.sh  sync3.sh  sync4.sh  syncs
# ./sync.sh
: No such filecannot open /megacmd/syncs
#

Why is there no space between filecannot?

Finally, when I'm manually writing this, it works fine:

# while read LINE;
> do echo "$LINE";
> done < "/megacmd/syncs"
sourcedir1 destdir1
sourcedir2 destdir2
sourcedir3 destdir3
#

edit1:

# ./sync.sh
: No such filecannot open /megacmd/syncs
# file syncs
syncs: ASCII text
#

`: No such file` Your script has dos line endings. Remove them. — KamilCuk, Mar 26 '22 at 21:46
It's trying to open `/megacmd/syncs\r`, not `/megacmd/syncs`. — chepner, Mar 26 '22 at 21:50
I tried recreating the file as a non DOS file, and still get the same result @chepner I tried removing any extraneous lines at the end of the script with no change. — Gene Parmesan, Mar 26 '22 at 22:18
`sync.sh` and `syncs` are not the same file. It's `sync.sh` that needs to have its DOS line endings converted to Unix line endings. — chepner, Mar 26 '22 at 22:21
Thank you @chepner ! you were correct. the .sh file was not correct. — Gene Parmesan, Mar 26 '22 at 22:24

Gene Parmesan · Answer 1 · 2022-03-27T02:13:13.523

1

@chepner was correct.

My script file was not saved with the correct line ending. A quick change in Notepad++ fixed it

edited Mar 27 '22 at 02:13

answered Mar 26 '22 at 22:28

Gene Parmesan

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2

[Character encoding](https://en.wikipedia.org/wiki/Character_encoding) is different from line endings. I suggest you correct your answer to say "not saved with the right line endings". – Shane Bishop Mar 26 '22 at 22:56

WHILE DO READ cannot open file directed in, even though it exists?

1 Answers1