Question

我有变量“a”，其中包含错误我希望将其视为数组并用newlines分隔。如何使用shell脚本或awk转换为单行？

输入数据

a=(BEGIN DE_DUP_DROP_DY_TABLE1('$Table_Name'); END;
Error at line 1
ORA-06550: line 1, column 7:
PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored)

预期产出

BEGIN DE_DUP_DROP_DY_TABLE1('$Table_Name'); END; | Error at line 1 | ORA-06550: line 1, column 7: | PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared |ORA-06550: line 1, column 7: | PL/SQL: Statement ignored

Answer 1

假设：

a="BEGIN DE_DUP_DROP_DY_TABLE1('$Table_Name'); END;
Error at line 1
ORA-06550: line 1, column 7:
PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored"

您可以使用以下方式生成一行输出：

echo "$a" | tr '\n' '|' | sed 's/|/ | /g'

产量：

BEGIN DE_DUP_DROP_DY_TABLE1(''); END; | Error at line 1 | ORA-06550: line 1, column 7: | PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared | ORA-06550: line 1, column 7: | PL/SQL: Statement ignored |

如果您需要删除最终的|（它来自echo输出末尾的换行符），请将其删除：

$ echo "$a" | tr '\n' '|' | sed -e 's/|/ | /g' -e 's/ | $//'
BEGIN DE_DUP_DROP_DY_TABLE1(''); END; | Error at line 1 | ORA-06550: line 1, column 7: | PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared | ORA-06550: line 1, column 7: | PL/SQL: Statement ignored
$

或者不要生成它：

$ printf "%s" "$a" | tr '\n' '|' | sed 's/|/ | /g'
BEGIN DE_DUP_DROP_DY_TABLE1(''); END; | Error at line 1 | ORA-06550: line 1, column 7: | PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared | ORA-06550: line 1, column 7: | PL/SQL: Statement ignored
$

当然，这些输出非常一致，并在每个管道周围放置一个空格（与样本输出不同）。如果数据中有管道，则会出现问题（管道周围出现意外/不需要的空间）。

如果，你有一个数组，每行都有一个单独的元素，你可以调整上面的代码来简单地处理它（使用printf）：

$ a=("BEGIN DE_DUP_DROP_DY_TABLE1('$Table_Name'); END;"
"Error at line 1"
"ORA-06550: line 1, column 7:"
"PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared"
"ORA-06550: line 1, column 7:"
"PL/SQL: Statement ignored")
$ printf "%s\n" "${a[@]}" | tr '\n' '|' | sed -e 's/|/ | /g' -e 's/ | $//'
BEGIN DE_DUP_DROP_DY_TABLE1(''); END; | Error at line 1 | ORA-06550: line 1, column 7: | PLS-00201: identifier 'DE_DUP_DROP_DY_TABLE1' must be declared | ORA-06550: line 1, column 7: | PL/SQL: Statement ignored
$

如何在shell scipt中处理典型的数组？

1 个答案: