问题描述
我有foreach循环,遍历文件,获取路径并将其替换为用于获取哈希的命令:
thread2
我面临的问题是我在文件的开头有2个空行,在文件的末尾有4个空行,这是输出:
$hash = @{}
...
defining variables here
...
foreach($line in $lines)
{
Get-filehash $line -Algorithm md5 | format-list | Where { $_ } | Out-File -Width 200 'hash.txt' -Encoding ascii -Append
Get-filehash $line -Algorithm sha256 | format-list | Where { $_ } | Out-File -Width 200 'hash.txt' -Encoding ascii -Append
Get-filehash $line -Algorithm sha512 | format-list | Where { $_ } | Out-File -Width 200 'hash.txt' -Encoding ascii -Append
@('MD5','SHA256','SHA512') | % { Get-filehash -Algorithm $_ $line } | export-csv hash.csv -Delimiter "," -Append
}
我应该如何消除文件开头和结尾的空行?
解决方法
您可以一步格式化所有输出,然后在写入文件之前对其进行修剪:
($lines | foreach {
foreach ($alg in ('MD5','SHA256','SHA512')) {
Get-FileHash $_ -Algorithm $alg
}
} | format-list | out-string).trim() | Out-File 'hash.txt' -Encoding ascii