我已经在shell脚本中定义了一个变量，我想使用它。由于某种原因，我无法将其传递到需要它的命令行中。

这是我的脚本，在最后几行失败

#! /usr//bin/tcsh -f
if ( $# != 2 ) then
        echo "Usage: jump_sorter.sh <jump> <field to sort on>"
        exit;
endif

set a = `cat $1 | tail -1` #prepares last row for check with loop 
set b = $2 #this is the value last row will be checked for

set counter = 0
foreach i ($a)

if ($i == "$b") then
    set bingo = $counter 
    echo "$bingo is the field to print from $a"
endif

set counter = `expr $counter + 1`
end

echo $bingo #this prints the correct value for using in the command below
cat $1 | awk '{print($bingo)}' | sort | uniq -c | sort -nr #but this doesn't work.

#when I use $9 instead of $bingo, it does work.

请问如何正确地将$ bingo传递到最后一行？

更新：按照Martin Tournoij接受的答案，处理命令中“ $”符号的正确方法是：

cat $1 | awk "{print("\$"$bingo)}" | sort | uniq -c | sort -nr