我有以下 CSV 文件(我有linux red-hat 6.2版本)
# more SIMPLE_FILES.CSV
FILE1,FILE2,FILE3
/etc/hosts,/etc/info.txt,/var/log.txt
/etc/some_file,/var/collect.txt,/etc/INFO.txt
/sbin/ls,/sbin/awk,/sbin/sed
# more COMPLEX_FILES.CSV
FILE1,FILE2,FILE3
/etc/config/net ip.txt,/var/log/summary snap/LOG OF global/info.txt
/etc/hosts files hosts.info/etc/hosts,var/log/messages,/sbin/collect file/all.info
/etc/old/TEXT INFO/info.txt/etc/OLD FILES/info.txt,/root/customor select/info.txt
以下bash脚本应该读取CSV文件并打印文件PATH FILE1,FILE2,FILE3
备注 - 我仅设置参数 CSV_LINE = 2 (CSV中的第二个值)
#!/bin/bash
CSV=SIMPLE_FILES.CSV
CSV_LINE=2
eval $(awk -v A=$CSV_LINE -F, 'NR==1 { for (i=1; i<=NF; i++) sn[i]=$i }
NR==A { for (i=1; i<=NF; i++) print sn[i] "=" $i; exit }' $CSV )
echo $FILE1
echo $FILE2
echo $FILE3
所以,如果我运行bash脚本(当我设置 CSV = SIMPLE_FILES.CSV 时),请获取以下内容
/read_path_from_csv.bash
/etc/hosts
/etc/info.txt
/var/log.txt
直到现在还好,
但如果我运行bash脚本(当我设置 CSV = COMPLEX_FILES.CSV 时),请获取follwoiojng
./read_path_from_csv.bash: line 20: ip.txt: command not found
我的结论 - 似乎PATH中的空格导致了这个错误
请建议如何更新我的代码,以便打印 COMPLEX_FILES.CSV 中定义的PATH,
如何在PATH之前添加一个“,在PATH之后添加一个”?
示例应该获取:
/read_path_from_csv.bash
/etc/config/net ip.txt,/var/log/summary snap/LOG OF global/info.txt
/etc/hosts files hosts.info/etc/hosts,var/log/messages,/sbin/collect file/all.info
/etc/old/TEXT INFO/info.txt/etc/OLD FILES/info.txt,/root/customor select/info.txt
答案 0 :(得分:2)
是的,它是导致此问题的PATH中的空格,您可以添加引号以避免它。
eval $(awk -v A=$CSV_LINE -v q='"' -F, 'NR==1 { for (i=1; i<=NF; i++) sn[i]=$i }
NR==A { for (i=1; i<=NF; i++) print sn[i] "=" q $i q; exit }' $CSV)
<强>解释强>
如果您在bash中运行eval 'FILE1=/path/file name'
,则会出错:
-bash: name: command not found
您可以引用/path/file name
部分以避免此错误:
> eval 'FILE1="/path/file name"'
> echo $FILE1
/path/file name