Add an install script to help in installing obitools 4 on Linux or MacOS computers

install_obitools.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+URL="https://go.dev/dl/"
+OBIURL4="https://git.metabarcoding.org/lecasofts/go/obitools/-/archive/master/obitools-master.tar.gz"
+
+# the directory of the script
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+# the temp directory used, within $DIR
+# omit the -p parameter to create a temporal directory in the default location
+WORK_DIR=$(mktemp -d -t "$DIR" "obitools4.XXXXXX")
+
+# check if tmp dir was created
+if [[ ! "$WORK_DIR" || ! -d "$WORK_DIR" ]]; then
+  echo "Could not create temp dir"
+  exit 1
+fi
+
+pushd $WORK_DIR
+
+OS=$(uname -a | awk '{print $1}')
+ARCH=$(uname -m)
+
+if [[ "$ARCH" == "x86_64" ]] ; then 
+    ARCH="amd64" 
+fi
+
+GOFILE=$(curl "$URL" \
+            | grep 'class="download"' \
+            | grep "\.tar\.gz" \
+            | sed -E 's@^.*/dl/(go[1-9].+\.tar\.gz)".*$@\1@' \
+            | grep -i "$OS" \
+            | grep -i "$ARCH" \
+            | head -1)
+
+GOURL=$(curl "${URL}${GOFILE}" \
+        | sed -E 's@^.*href="(.*\.tar\.gz)".*$@\1@')
+        
+curl "$GOURL" \
+    | tar zxf -
+
+export PATH="$WORK_DIR/go/bin:$PATH"
+
+curl "$OBIURL4" \
+    | tar zxf - 
+
+cd obitools-master
+make
+
+popd