bash $INPUT 不明确的重定向
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$INPUT Ambiguous redirect
提问by user1301593
I wrote this script a while ago and it worked fine, but for some reason I am getting a "Ambiguous redirect" error message for line 11 in cygwin now.
我前段时间写了这个脚本，它运行良好，但由于某种原因，我现在在 cygwin 中收到第 11 行的“模糊重定向”错误消息。
#!/bin/bash
cd 'my/file/path'
INPUT= ./Students.csv
OLDIFS=$IFS
IFS=,
[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
while read flname
do
cp Rubric.pdf ./Grades/$flname_rubric.PDF
done < $INPUT
IFS=$OLDIFS
What am I doing wrong here?
我在这里做错了什么？
回答by Daniel Haley
Try removing the space after the equals sign in INPUT=.
尝试删除等号后的空格INPUT=。
回答by Rob Kielty
As already noted remove the space. so line reads INPUT=./Students.csv
如前所述，删除空格。所以行读INPUT=./Students.csv
Wrap the $INPUT in "" so it reads done < "$INPUT"
将 $INPUT 包裹在 "" 中，使其读取 done < "$INPUT"
I added echo "cp Rubric.pdf ./Grades/$flname_rubric.PDF"so you can see the while loop at work.
我添加了echo "cp Rubric.pdf ./Grades/$flname_rubric.PDF"以便您可以看到工作中的 while 循环。
#!/bin/bash
INPUT=./Students.csv
OLDIFS=$IFS
IFS=,
[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
echo "While "
while read flname
do
echo "cp Rubric.pdf ./Grades/$flname_rubric.PDF"
cp Rubric.pdf ./Grades/$flname_rubric.PDF
done < "$INPUT"
IFS=$OLDIFS
