rasm2 from radare2 is much better here.

bashrc

@@ -71,24 +71,6 @@ function set_prompt {
     PS2="${CYA}. ${NOR}"
 }
 
-asm() {
-
-    local ASM_DIR=$( mktemp -d )
-
-    local ASM_SRC=$ASM_DIR/temp.asm
-    local ASM_LST=$ASM_DIR/temp.lst
-    local ASM_OUT=$ASM_DIR/temp.out
-
-    echo "$1" | sed -e 's/[[:space:]]\{2,\}/\n/g' > $ASM_SRC
-
-    nasm $ASM_SRC -o $ASM_OUT -l $ASM_LST
-
-    [[ $? == 0 ]] && sed -e 's/[[:space:]]*[0-9]*[[:space:]]*//' $ASM_LST
-
-    rm -f $ASM_SRC $ASM_LST $ASM_OUT
-    rmdir $ASM_DIR
-}
-
 syscall() {
     grep "#define __NR_$1" /usr/include/asm/unistd_64.h | \
         sed -e 's/.*__NR_//' -e 's/\s\+/ /' | column -t