围绕文件中的每一行包装if语句

Question

我有一个包含下一行的文件:

copy THIS:0022 to UNB:0022;
copy THIS:0023 to UNB:0023;
copy THIS:0024 to UNB:0024;

我想处理每一行并在其周围创建一个if语句,如:

if THIS:0022 != ""
    copy THIS:0022 to UNB:0022;
endif
if THIS:0023 != ""
    copy THIS:0023 to UNB:0023;
endif
if THIS:0024 != ""
    copy THIS:0024 to UNB:0024;
endif

如何使用bash和awk(和/或sed)来完成？

Answer 1

#!/bin/bash

while read a b c d; do
    echo "if $b != \"\""
    echo "    $a $b $c $d"
    echo "endif"
done

把它放进去foo.sh跑./foo.sh < infile.