我有 2 個串列，其中包含帶有 md5sum 檢查的檔案，并且這些串列具有相同檔案的不同路徑。
第一個檔案中包含校驗和的內容示例 (server.list)：
2c03ff18a643a1437ec0cf051b8b7b9d /tmp/fastq1_L001_R1_001.fastq.gz
c430f587aba1aa9f4fdf69aeb4526621 /tmp/fastq1_L001_R2_001.fastq.gz/
6e6bcd84f264233cf7c428c0cfdc0c03 tmp/fastq1_L002_R1_001.fastq.gz
帶有校驗和的兩個檔案中的內容示例 (downloaded.list)：
2c03ff18a643a1437ec0cf051b8b7b9d /home/projects/fastq1_L001_R1_001.fastq.gz
c430f587aba1aa9f4fdf69aeb4526621 /home/projects/fastq1_L001_R2_001.fastq.gz
6e6bcd84f264233cf7c428c0cfdc0c03 /home/projects/fastq1_L002_R1_001.fastq.gz
當我運行以下行時，我得到以下行：
awk -F"/" 'FNR==NR{filearray[$1]=$NF; next }!($1 in filearray){printf "%s has a different md5sum\n",$NF}' downloaded.list server.list
fastq1_L001_R1_001.fastq.gz has a different md5sum
fastq1_L001_R2_001.fastq.gz has a different md5sum
fastq1_L002_R2_001.fastq.gz has a different md5sum
為什么我收到此訊息，因為兩個檔案中的第一列相同？有人可以在這個問題上啟發我嗎？
編輯：
如果我洗掉路徑并只保留檔案名，它就可以正常作業。
編輯2：
正如所指出的，檔案路徑形式還有另一種可能，它不以/. 在這種情況下，我不能/用作欄位分隔符。
uj5u.com熱心網友回復：
假設：
- 檔案名（無路徑）和 md5sum 必須匹配
- 檔案名可能不會以相同的順序列出
- 兩個檔案中可能不存在檔案名
樣本資料：
$ head downloaded.list server.list
==> downloaded.list <==
2c03ff18a643a1437ec0cf051b8b7b9d /home/projects/fastq1_L001_R1_001.fastq.gz # match
YYYYf587aba1aa9f4fdf69aeb4526621 /home/projects/fastq1_L001_R5_911.fastq.gz # different md5sum
c430f587aba1aa9f4fdf69aeb4526621 /home/projects/fastq1_L001_R2_001.fastq.gz # match
MNOPf587aba1aa9f4fdf69aeb4526621 /home/projects/fastq1_L001_R8_abc.fastq.gz # filename does not exist in other file
ABCDf587aba1aa9f4fdf69aeb4526621 /home/projects/fastq1_L001_R9_004.fastq.gz # different filename but matching md5sum (vs last line of other file)
==> server.list <==
2c03ff18a643a1437ec0cf051b8b7b9d /tmp/fastq1_L001_R1_001.fastq.gz # match
c430f587aba1aa9f4fdf69aeb4526621 /tmp/fastq1_L001_R2_001.fastq.gz # match
XXXXf587aba1aa9f4fdf69aeb4526621 /tmp/fastq1_L001_R5_911.fastq.gz # different md5sum
TUVWff18a643a1437ec0cf051b8b7b9d /tmp/fastq1_L999_R6_922.fastq.gz # filename does not exist in other file
ABCDf587aba1aa9f4fdf69aeb4526621 /tmp/fastq1_L001_R7_933.fastq.gz # different filename but matching md5sum (vs last line of other file)
awk解決空白問題以及驗證檔案名匹配的一種想法：
awk ' # stick with default field delimiter of white space but ...
{ md5sum=$1
n=split($2,arr,"/") # split 2nd field on "/" delimiter
fname=arr[n]
if (FNR==NR)
filearray[fname]=md5sum
else {
if (fname in filearray && filearray[fname] == $1)
next
printf "%s has a different md5sum\n",fname
}
}
' downloaded.list server.list
這會產生：
fastq1_L001_R5_911.fastq.gz has a different md5sum
fastq1_L999_R6_922.fastq.gz has a different md5sum
fastq1_L001_R7_933.fastq.gz has a different md5sum
uj5u.com熱心網友回復：
$1用作陣列鍵的空格會導致問題。洗掉它：
awk -F"/" '{gsub(/ /, "", $1)}; FNR==NR{filearray[ $1]=$NF; next }!($1 in filearray){printf "%s has a different md5sum\n",$NF}' list1.txt list2.txt
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