I had a question that was answered here:
<https://unix.stackexchange.com/questions/264925/awk-fs-with-back-slashes>

After that I tried adding it to a `.sh` script that starts with:

```
#!/bin/bash

```

My Line: 

```
category1Filenames=(\`find . -maxdepth 1 -type f |
gawk 'BEGIN { FS = "(\\\\./)|(\\\\.)" } ; { print $2 }' | sort -u\`)

```

And then I print the output using:

```
for genericFilename in ${category1Filenames[@]}; do  
  printf "%s\n" $genericFilename  
done 

```

But this gives me the error:

```
gawk: cmd. line:1: warning: escape sequence `\.' treated as plain `.'

```

If I change the line to be:

```
category1Filenames=$(find . -maxdepth 1 -type f |
gawk 'BEGIN { FS = "(\\\\./)|(\\\\.)" } ; { print $2 }' | sort -u)

```

Then it works as expected.

I'm assuming that the problem was with using the back tick characters, but I don't understand why. Probably because I don't understand the behavior of ``` vs `'` vs `"`. If anyone can point me to documentation that can explain this behavior (maybe tldp) then it would be greatly appreciated.