fix: optimize file management in scripts

no need to `cat` into `grep`/`sed`

.local/bin/bibinput

@@ -12,11 +12,11 @@
 
 parse(){
 	if [ "$1" = "@" ]; then
-		cat "$file" | grep "$1" | awk -F '{' '{print $2} ' | tr ',' '\n' | sort -r | sed '/^[[:space:]]*$/d'
+		grep "$1" "$file" | awk -F '{' '{print $2} ' | tr ',' '\n' | sort -r | sed '/^[[:space:]]*$/d'
 	elif [ "$1" = "keywords" ]; then
-		cat "$file" | grep "$1" | awk -F '"' '{print $2} ' | tr ' ' '\n' | sed 's/,//g' | sort -u | sed '/^[[:space:]]*$/d'
+		grep "$1" "$file" | awk -F '"' '{print $2} ' | tr ' ' '\n' | sed 's/,//g' | sort -u | sed '/^[[:space:]]*$/d'
 	else
-		cat "$file" | grep "$1" | sed "s/,$//g" | awk -F '"' '{print $2} ' | sort | uniq
+		grep "$1" "$file" | sed "s/,$//g" | awk -F '"' '{print $2} ' | sort | uniq
 
 	fi
 }
@@ -25,7 +25,7 @@ input() {
 	if [ "$1" = "reference" ]; then
 		refinput | dmenu -i -p 'reference?' -l 10
 	elif [ "$1" = "doctype" ]; then
-		printf "$doctypes" | sed "s| |\n|g" | dmenu -i -p 'doctype?'
+		echo "$doctypes" | sed "s| |\n|g" | dmenu -i -p 'doctype?'
 	elif [ "$1" = "author" ]; then
 		parse "author" | dmenu -i -p 'author name? (surname, first name)' -l 10
 	elif [ "$1" = "keywords" ]; then

.local/bin/bibshow

@@ -12,7 +12,7 @@
 
 file="$(find $HOME/documents/bibliographies/ -type f -not -path '*/\.*' | dmenu -l 20 -p "[bibshow] which bibliography?")" # the -not -path allows find to ignore hidden files
 
-refs_list="$(cat "$file" | sed 's/\t//g' | tr '\n' ' ' | sed 's/}\ /}\n/g')"
+refs_list="$(sed 's/\t//g' "$file" | tr '\n' ' ' | sed 's/}\ /}\n/g')"
 [ -z $refs_list ] && exit 1;
 
 ref="$(echo "$refs_list" | dmenu -i -p 'infos?' -l 10)"

.local/bin/compiler

@@ -32,7 +32,7 @@ shebangtest()
 }
 
 texcompile() { \
-	bibliography="$(cat "$file" | grep '\bibliography')"
+	bibliography="$(grep '\bibliography' "$file")"
 	if [ -n "$bibliography" ]; then
 		pdflatex --output-directory="$dir" "$base" &&
 		bibtex "$base" &&