AWK 與 $0 使用 sed 用新字符串替換模式

Question

我有一個包含多個作業內容的文件，例如：

insert_job: 18132_TAL_D_DS_PEAR_AUTORECON   job_type: CMD 
command: $ADM_BIN/pear_generic_wrapper.ksh 
owner: gpadmin
permission: 

在這里，我需要為每個 insert_job 添加一行：

insert_job: 18132_TAL_D_DS_PEAR_AUTORECON   job_type: CMD 
condition: 18132_D_DS_PEAR_AUTORECON  

所以，基本上是 2 個步驟（首先復制行作業名稱；然后將18132_TAL_替換為18132_在打印為條件的第二個復制行中：）

為此，我 go 直到每個 insert_job 行的這一點：

insert_job: 18132_TAL_D_DS_PEAR_AUTORECON   job_type: CMD 
insert_job: 18132_TAL_D_DS_PEAR_AUTORECON 

現在，要更新第二行以將 insert_job 替換為條件，並將18132_TAL_替換為18132_ ，我被卡住了。

我正在嘗試編寫如下代碼：

$ cat input.dat | awk '($0!~"job_type") {print $0|sed "s/insert_job/condition/"} 1' 

但是，sed 在這里不起作用，它會給出語法錯誤。

您能否在print $0之后幫助使用 sed 的正確語法。

Answer 1

請您嘗試以下操作。

awk '
/insert_job/{
  val=$2
  sub(/_[^_]*/,"",val)
  $0=$0 ORS "condition: " val
  val=""
}
1
' Input_file

說明：為上述代碼添加說明。

awk '                            ##Starting awk code from here.
/insert_job/{                    ##Checking condition if string insert_job is found in a line then do following.
  val=$2                         ##Creating variable val whose value is $2(2nd field) of current line.
  sub(/_[^_]*/,"",val)           ##Substituting _ till next occurrence of _ with NULL in val here.
  $0=$0 ORS "condition: " val    ##Concatenating ORS(new line) then string condition and variable val here.
  val=""                         ##Nullifying variable val here.
}
1                                ##1 will print edited/non-edited line here.
'  Input_file                    ##Mentioning Input_file name here.

Output 將如下：

insert_job: 18132_TAL_D_DS_PEAR_AUTORECON   job_type: CMD 
condition: 18132_D_DS_PEAR_AUTORECON
command: /pear_generic_wrapper.ksh 
owner: gpadmin
permission: 

Answer 2

這是你想要做的嗎？

$ awk '
    { print }
    sub(/^insert_job/,"condition") {
        sub(/_TAL/,"")
        print $1, $2
    }
' file
insert_job: 18132_TAL_D_DS_PEAR_AUTORECON   job_type: CMD
condition: 18132_D_DS_PEAR_AUTORECON
command: $ADM_BIN/pear_generic_wrapper.ksh
owner: gpadmin
permission:

You never need sed when you're using awk and awk is not a shell, it's a completely separate tool with it's own language, syntax, and semantics so you shouldn't be trying to call other UNIX tools from it using shell syntax.