add more info to index page

content/_index.md

@@ -14,6 +14,8 @@ the problem here is that `curl` might not be installed on second line, but the d
 it will result in `data.json` being irreparably deleted and no way to reinstall it
 
 ## solution
+so generally, you would want to check if the dependencies of your bash script are installed, right?
+
 you could write up something like this and put it in the start:
 
 ```sh
@@ -23,12 +25,11 @@ if ! command -v curl; then
 fi
 ```
 
-but that's just not reliable and barely maintainable. so that's why i made this thing.
+but that's just not reliable and barely maintainable. so that's why i made this thing. it parses your script, and then appends a small snippet at the earliest place in your program that would check if all deps are installed.
 
 you can use it like this:
 
 ```sh
-# program.sh
 #!/usr/bin/env bash
 curl https://url.com
 ```
@@ -36,3 +37,42 @@ curl https://url.com
 then compile it like that: `bshchk program.sh dist.sh`.
 
 also you can read the script from stdin: `cat program.sh | bshchk - dist.sh`, or get the output to stdout: `bshchk program.sh > dist.sh`
+
+it would output something like this:
+
+```sh
+
+#!/usr/bin/env bash
+
+# This is the runtime dependency checker
+# Please do not remove the following lines.
+deps=('curl')
+non_ok=()
+
+for d in $deps
+do
+    if ! command -v $d > /dev/null 2>&1; then
+        non_ok+=$d
+    fi
+done
+
+if (( ${#non_ok[@]} != 0 )); then
+    >&2 echo "RDC Failed!"
+    >&2 echo "  This program requires these commands:"
+    >&2 echo "  > $deps"
+    >&2 echo "    --- "
+    >&2 echo "  From which, these are missing:"
+    >&2 echo "  > $non_ok"
+    >&2 echo "Make sure that those are installed and are present in \$PATH."
+fi
+
+unset non_ok
+unset deps
+# Dependencies are OK at this point
+
+curl https://url.com
+```
+
+---
+
+[website's source code available here](https://git.blek.codes/blek/bshchk.web)