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我有一个纯文本文件，其中包含用破折号分隔的曲目标题和艺术家。我想将所有标题放入一个数组 ( TRK_TITLE[]) 中。同时创建艺术家数组 ( ARTIST[])。下面是我正在使用的代码：

CTR=0
# Read in the track title file
while read line

do 

# Add to the counter
    CTR=$((CTR + 1))

# Get the track number
    TRK_NUM[$CTR]=$CTR

# VARIOUS is set by command line parameter
if [ $VARIOUS = "FALSE" ]
then
# -- THIS BIT WORKS! ------------------------------
TRK_TITLE[$CTR]=${line}
# ARTISTS determined by grandparent directory name.
ARTIST[$CTR]="$ARTISTS"

# THE BIT THAT DOESN'T WORK AS IT APPEARS --------- 
else
# VARIOUS has been set to TRUE
# Get the track title
# 1st, Make sure I'm dealing with something sensible
echo "$line"
# Get the length of the line,
# just for information
total_len=${#line}
# Find the position of the "-"
dash_pos=`expr index "$line" -`

# These lines prove that the syntax works
echo "${line:0:$dash_pos - 2}"

echo "${line:$dash_pos + 1}"

echo $total_len "--" $dash_pos 
# Now add to arrays
TRK_TITLE[$CTR]="${line:0:$dash_pos -2}"
#TRK_TITLE="${line:0:$dash_pos -2}"

ARTIST[$CTR]="${line:$dash_pos + 1}"
#ARTIST="${line:$dash_pos + 1}"

#Now to see the output
echo $TRK_TITLE[$CTR] "is Track"
#echo "$TRK_TITLE is Track"

echo $ARTIST[$CTR] "is Artist"
#echo "$ARTIST is Artist"

fi

# keep going until the end
# Variable name used for input file
done < "$FYL_2_USE"

当哈希在它们所在的位置时，输出如下：

献给我爱的人——妈妈和爸爸

献给我爱的人

妈妈和爸爸

53 -- 29

[19] 是轨道

[19] 是艺术家

如果在 variable 和 echo 语句上交换散列，则输出如下：

献给我爱的人——妈妈和爸爸

献给我爱的人

妈妈和爸爸

53 -- 29

献给我爱的人是轨道

妈妈和爸爸是艺术家

Shell 是 Gnu Bash V4.1.0(2)

4

1 回答 1

1

如果您更换：

echo $TRK_TITLE[$CTR] "is Track"
echo $ARTIST[$CTR] "is Artist"

和：

echo ${TRK_TITLE[$CTR]} "is Track"
echo ${ARTIST[$CTR]} "is Artist"

你的脚本可以正常工作。

于 2013-10-28T12:13:16.063 回答