[英]Sed - Delete blank rows from csv file
I am trying to extract some .csv files from gz (compressed) files. 我正在尝试从gz(压缩)文件中提取一些.csv文件。 I want to delete the rows in the excel file that are blank.
我想删除Excel文件中空白的行。 I am using the code below but it does not work :
我正在使用下面的代码,但它不起作用:
$entoli = 'zcat ' . str_replace(' ', '\ ', $filePath) . ' | sed \'/^\s*$/d\' > ' . str_replace(' ', '\ ', $savePath);
exec($entoli);
where $filePath
is the directory of the original compressed and $savePath
is the directory where the extracted file will be saved. 其中
$filePath
是原始压缩文件的目录,而$savePath
是将保存提取文件的目录。 Also, I am using str_replace(' ', '\\ ', ....)
just in case there are spaces in the path. 另外,我正在使用
str_replace(' ', '\\ ', ....)
,以防路径中有空格。
I used this code before in order to delete the rows that do not start with the date format and it works : 我之前使用此代码是为了删除不以日期格式开头的行,并且可以使用:
$entoli = 'zcat ' . str_replace(' ', '\ ', $filePath) . ' | sed \'/^[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]/!d\' > ' . str_replace(' ', '\ ', $savePath);
exec($entoli);
so, I presume that only this line has to be changed : 因此,我假设只需要更改此行:
sed \'/^\s*$/d\'
After trying to use different syntax, I managed to make it work : 在尝试使用其他语法之后,我设法使其工作:
$entoli = 'zcat ' . str_replace(' ', '\ ', $filePath) . ' | sed \'/^,,,,/d\' > ' . str_replace(' ', '\ ', $temp);
exec($entoli);
It works with awk
too: 它也可以与
awk
一起使用:
$entoli = 'zcat ' . str_replace(' ', '\ ', $filePath) . ' | awk \'!/^,,,,/\' > ' . str_replace(' ', '\ ', $temp);
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