linux - 循环的 shell 脚本断行？

Question

我正在尝试使用 cut 命令在另一个变量(如 ip 和端口号)中保存 $i 变量的一些数据，以便我可以将 ip 和端口都存储到数据库中，但是由于下一行，此输出会导致保存数据的问题，请帮助..

foo=( $(grep logs  data.txt) ) 

    for i in "${foo[@]}"
    do

    echo "$i" | sed 's/Failed//g' | sed "s/logs//g" | sed "s/for//g" | sed "s/delmum//g" | sed "s/from//g"  | sed "s/port//g"  | sed "s/invalid//g" | sed "s/user//g"| sed "s/castis//g" | sed "s/guest//g" | sed '/^$/d'

    done

    Output :-Mar
    4
    03:08:15
    sshd[96487]:
    225.33.58.96
    62445

    Mar
    4
    03:08:15
    sshd[65741]:
    225.33.58.96
    62445

    Mar
    4
    03:08:15
    sshd[34595]:
    202.83.52.11
    43321

    Mar
    4
    03:08:16
    sshd[25485]:
    356.214.857.246
    12445

    Mar
    4
    03:08:16
    sshd[25245]:
    324.684.723.857
    24875


    output expected :- 
    Mar 4 03:08:15 sshd[96487]: 225.33.58.96 62445
    Mar 4 03:08:15 sshd[34595]: 202.83.52.11 43321
    Mar 4 03:08:16 sshd[25245]: 324.684.723.857 24875

data.txt
Mar  4 03:08:15 delmum sshd[96487]: Failed logs for root from 225.33.58.96 port 62445 ssh2
Mar  4 03:08:06 perfmum sshd[33799]: Connection closed by
Mar  4 03:08:15 delmum sshd[65741]: Failed logs for root from 225.33.58.96 port 62445 ssh2
Mar  4 03:08:15 delmum sshd[34595]: Failed logs for root from 202.83.52.11 port 43321 ssh2
Mar  4 03:08:06 delmum sshd[12485]: Connection closed by
Mar  4 03:08:06 delmum sshd[85468]: Connection closed by
Mar  4 03:08:06 delmum sshd[51396]: Connection closed by
Mar  4 03:08:16 delmum sshd[25485]: Failed logs for invalid user castis from 356.214.857.246 port 12445 ssh2
Mar  4 03:08:16 delmum sshd[25245]: Failed logs for invalid user castis from 324.684.723.857 port 24875 ssh2
Mar  4 03:08:06 delmum sshd[23541]: Connection closed by

data.txt 的内容是行的，但是为什么循环自己断行

Answer 1

使用单个 awk 命令:

awk '/logs/{ 
         if (/from/ && /port/) { sub(/: .* from/,""); tail=":" OFS $6 OFS $8 }
         print $1,$2,$3,$4,$5 tail; tail=""; 
     }' data.txt

示例输出:

Mar 4 03:08:15 delmum sshd[96487]: 225.33.58.96 62445
Mar 4 03:08:15 delmum sshd[65741]: 225.33.58.96 62445
Mar 4 03:08:15 delmum sshd[34595]: 202.83.52.11 43321
Mar 4 03:08:16 delmum sshd[25485]: 356.214.857.246 12445
Mar 4 03:08:16 delmum sshd[25245]: 324.684.723.857 24875