diff --git a/.local/bin/getbib b/.local/bin/getbib
index 3e6c19ab..e2a1bebd 100755
--- a/.local/bin/getbib
+++ b/.local/bin/getbib
@@ -1,25 +1,28 @@
 #!/bin/dash
 
-BIB_FILE="$HOME/latex/uni.bib"
+BIB_FILE="${HOME}/latex/uni.bib"
 
 correction_method() {
-    sed -n -E 's/.*((DOI|doi)((\.(org))?\/?|:? *))([^: ]+[^ .]).*/\6/p; T; q'
+        sed -n -E 's/.*((DOI|doi)((\.(org))?\/?|:? *))([^: ]+[^ .]).*/\6/p; T; q'
 }
 
 get_doi_from_pdf() {
-    pdf="$1"
-    doi=$(pdfinfo "$pdf" 2>/dev/null | correction_method)
-    [ -z "$doi" ] && doi=$(pdftotext -q -l 2 "$pdf" - 2>/dev/null | correction_method)
-    [ -z "$doi" ] && echo "No DOI found for PDF: $pdf" >&2 && return 1
-    echo "$doi"
+        pdf="${1}"
+        doi="$(pdfinfo "${pdf}" 2> "/dev/null" | correction_method)"
+
+	[ -z "${doi}" ] && doi="$(pdftotext -q -l "2" "${pdf}" - 2> "/dev/null" | correction_method)"
+
+	[ -z "${doi}" ] && echo "No DOI found for PDF: ${pdf}" >&2 && return "1"
+
+	echo "${doi}"
 }
 
 correct_names() {
-    sed 's/\}, /\},\n	/g
+        sed 's/\}, /\},\n	/g
  	 s/, /,\n	/
          s/ }/\n}/
 	 s/,\s*pages=/,\n\tpages=/' |
-    sed '1s/^ *//
+                sed '1s/^ *//
          1s/[0-9]*\([0-9]\{2\}\)/\1/
          1s/_//
          1s/.*/\L&/
@@ -28,36 +31,51 @@ correct_names() {
 }
 
 process_doi() {
-    doi="$1"
-    bibtex_entry=$(curl -s "https://api.crossref.org/works/"$doi"/transform/application/x-bibtex" | correct_names)
-    red_color='\033[0;31m'
-    reset_color='\033[0m'
+        doi="${1}"
+        bibtex_entry="$(curl -s "https://api.crossref.org/works/${doi}/transform/application/x-bibtex" | correct_names)"
+        red_color='\033[0;31m'
+        reset_color='\033[0m'
 
-    printf "${red_color}%s${reset_color}\n" "$bibtex_entry"
-    [ -z "$bibtex_entry" ] && [ "$(echo "$bibtex_entry" | cut -c2)" != "@" ] && echo "Failed to fetch bibtex entry for DOI: $doi" && return 1
+        printf "${red_color}%s${reset_color}\n" "${bibtex_entry}"
 
-    grep -iFq "doi = {${doi}}" "$BIB_FILE" || {
-        [ -s "$BIB_FILE" ] && echo "" >> "$BIB_FILE"
-        echo "$bibtex_entry" >> "$BIB_FILE"
-        echo "Added bibtex entry for DOI: $doi"
-        return 0
-    }
-    echo "Bibtex entry for DOI: $doi already exists in the file."
+	[ -z "${bibtex_entry}" ] && [ "$(echo "${bibtex_entry}" | cut -c2)" != "@" ] && {
+		echo "Failed to fetch bibtex entry for DOI: ${doi}"
+		return "1"
+	}
+
+        grep -iFq "doi = {${doi}}" "${BIB_FILE}" || {
+                [ -s "${BIB_FILE}" ] && echo "" >> "${BIB_FILE}"
+		echo "${bibtex_entry}" >> "${BIB_FILE}"
+                echo "Added bibtex entry for DOI: ${doi}"
+		return "0"
+        }
+
+        echo "Bibtex entry for DOI: ${doi} already exists in the file."
 }
 
-[ -z "$1" ] && echo "Give either a pdf file or a DOI or a directory path that has PDFs as an argument." && exit 0
-
-[ -d "$1" ] && {
-    for pdf in "$1"/*.pdf; do
-        doi=$(get_doi_from_pdf "$pdf")
-        [ -n "$doi" ] && process_doi "$doi"; done
-	exit 0
+[ -z "${1}" ] && {
+	echo "Give either a pdf file or a DOI or a directory path that has PDFs as an argument."
+	exit "0"
 }
 
-[ -f "$1" ] && [ "$(echo "$1" | grep -c "\.pdf$")" -ne 0 ] && {
-    doi=$(get_doi_from_pdf "$1")
-    [ -n "$doi" ] && { process_doi "$doi"; exit 0; }
+[ -d "${1}" ] && {
+        for pdf in "${1}"/*.pdf; do
+                doi="$(get_doi_from_pdf "${pdf}")"
+                [ -n "${doi}" ] && process_doi "${doi}"
+        done
+
+	exit "0"
 }
 
-doi=$(echo "$1" | correction_method)
-[ -n "$doi" ] && process_doi "$doi"
+[ -f "${1}" ] && [ "$(echo "${1}" | grep -c "\.pdf$")" -ne "0" ] && {
+        doi="$(get_doi_from_pdf "${1}")"
+
+	[ -n "${doi}" ] && {
+                process_doi "${doi}"
+                exit "0"
+        }
+}
+
+doi="$(echo "${1}" | correction_method)"
+
+[ -n "${doi}" ] && process_doi "${doi}"