我在练习中遇到问题。
我已经在Python中尝试过：
index = 0
col = "17"
while index < len(packages):
cmdw = "awk -F \"\t\" -V OFS=\"\t\" -v col=" + col + " -v dato=" + packages[index] + " '{$col=$dato};' 1540476113.gt.tie "
print("eseguo il comando ",cmd)
os.system(cmdw)
print("comando eseguito")
index = index + 1
print("packages aggiunti!")
样本数据输入文件：
# TIE output version: 1.0 (text format)
# generated by: . -a ndping_1.0 -r /home/giuseppe/Scrivania/gruppo30/1540476113/traffic.pcap
# Working Mode: off-line
# Session Type: biflow
# 1 plugins enabled: ndping
# begin trace interval: 1540476116.42434
# begin TIE Table
# id src_ip dst_ip proto sport dport dwpkts uppkts dwbytes upbytes t_start t_last app_id sub_id app_details confidence
17 192.168.20.105 216.58.205.42 6 50854 443 8 9 1507 1728 1540476136.698920 1540476136.879543 501 0 Google 100
26 192.168.20.105 151.101.66.202 6 40107 443 15 18 5874 1882 1540476194.196948 1540476204.641949 501 0 SSL_with_certificate 100
27 192.168.20.105 31.13.90.2 6 48133 443 10 15 4991 1598 1540476194.218949 1540476196.358946 501 0 Facebook 100
38 192.168.20.105 13.32.71.69 6 52108 443 9 12 5297 2062 1540476195.492946 1540476308.604998 501 0 SSL_with_certificate 100
0 34.246.212.92 192.168.20.105 6 443 37981 3 2 187 98 1540476116.042434 1540476189.868844 0 0 Other TCP 0
29 192.168.20.105 13.32.123.222 6 36481 443 11 15 6638 1914 1540476194.376945 1540476308.572998 501 0 SSL_with_certificate 100
31 192.168.20.105 8.8.8.8 17 1219 53 1 1 253 68 1540476194.898945 1540476194.931198 501 0 DNS 100
42 192.168.20.105 8.8.8.8 17 8339 53 1 1 198 70 1540476215.626959 1540476215.643374 501 0 DNS 100
33 192.168.20.105 8.8.8.8 17 10529 53 1 1 198 70 1540476194.960946 1540476194.977174 501 0 DNS 100
35 192.168.20.105 8.8.8.8 17 10916 53 1 1 169 64 1540476195.149943 1540476195.189064 501 0 DNS 100
44 192.168.20.105 8.8.8.8 17 11736 53 1 1 111 63 1540476217.327956 1540476217.369471 501 0 DNS 100
21 192.168.20.105 8.8.8.8 17 13249 53 1 1 102 70 1540476189.828943 1540476189.869843 501 0 DNS 100
24 192.168.20.105 8.8.8.8 17 14312 53 1 1 128 64 1540476194.150951 1540476194.166601 501 0 DNS 100
28 192.168.20.105 8.8.8.8 17 15049 53 1 1 174 67 1540476194.312946 1540476194.354500 501 0 DNS 100
37 192.168.20.105 8.8.8.8 17 17362 53 1 1 75 59 1540476195.428947 1540476195.468915 501 0 DNS 100
39 192.168.20.105 8.8.8.8 17 25274 53 1 1 258 63 1540476195.683944 1540476195.699796 501 0 DNS 100
25 192.168.20.105 8.8.8.8 17 26608 53 1 1 122 64 1540476194.191945 1540476194.207576 501 0 DNS 100
14 192.168.20.105 8.8.8.8 17 35680 53 1 1 120 59 1540476133.452918 1540476133.486316 501 0 DNS 100
18 192.168.20.105 8.8.8.8 17 43833 53 1 1 118 72 1540476136.868920 1540476136.902531 501 0 DNS 100
4 192.168.20.105 8.8.8.8 17 43919 53 1 1 93 61 1540476126.806916 1540476126.822800 501 0 DNS 100
2 192.168.20.105 8.8.8.8 17 51340 53 1 1 141 63 1540476124.935913 1540476124.967768 501 0 DNS 100
3 192.168.20.105 8.8.8.8 17 64815 53 1 1 141 63 1540476124.974914 1540476125.006749 501 0 DNS 100
30 192.168.20.105 216.58.198.14 6 48980 443 4 2 1093 884 1540476194.835944 1540476195.102945 0 0 Other TCP 0
我可以在标头的12行之后向该文件添加一个新列
答案 0 :(得分：1)
您可以直接在python中读取文件，跳过12行标题并将所需的值附加到最后一列。
我刚刚在下面的代码中打印了输出，您可以根据需要将其写入新文件。
index = 0
col = "17"
header_len = 0
packages = [ "dato =" + str(i) for i in range(100)] # created dummy list, replace it with original one
with open("input_file.txt",'r+') as f :
for line in f:
if header_len >= 12 and index < len(packages): # comparing header length and remaining index in list.
print("{}\t{}".format(line.rstrip('\n'),packages[index]))
index+=1
else:
print(line)
header_len+=1
示例输出：
# TIE output version: 1.0 (text format)
# generated by: . -a ndping_1.0 -r /home/giuseppe/Scrivania/gruppo30/1540476113/traffic.pcap
# Working Mode: off-line
# Session Type: biflow
# 1 plugins enabled: ndping
# begin trace interval: 1540476116.42434
# begin TIE Table
# id src_ip dst_ip proto sport dport dwpkts uppkts dwbytes upbytes t_start t_last app_id sub_id app_details confidence
17 192.168.20.105 216.58.205.42 6 50854 443 8 9 1507 1728 1540476136.698920 1540476136.879543 501 0 Google 100
26 192.168.20.105 151.101.66.202 6 40107 443 15 18 5874 1882 1540476194.196948 1540476204.641949 501 0 SSL_with_certificate 100 dato =0
27 192.168.20.105 31.13.90.2 6 48133 443 10 15 4991 1598 1540476194.218949 1540476196.358946 501 0 Facebook 100 dato =1
38 192.168.20.105 13.32.71.69 6 52108 443 9 12 5297 2062 1540476195.492946 1540476308.604998 501 0 SSL_with_certificate 100 dato =2
0 34.246.212.92 192.168.20.105 6 443 37981 3 2 187 98 1540476116.042434 1540476189.868844 0 0 Other TCP 0 dato =3
29 192.168.20.105 13.32.123.222 6 36481 443 11 15 6638 1914 1540476194.376945 1540476308.572998 501 0 SSL_with_certificate 100 dato =4