awk每接收文件的一行，然后执行相应的命令来处理。 用legal文件来做示例 $ cat /etc/legal The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the indivi
简单来说awk就是把文件逐行的读入，以空格为默认分隔符将每行切片，切开的部分再进行各种分析处理。
[root@localhost home]# awk '//home/bo//' bwk.txt awk: cmd. line:1: //home/bo// awk: cmd. line:1: ^ unexpected newline or end of string [root@localhost home]# 2.5 使用匹配表达式 ~ [root@localhost home]# awk '$1 ~ "en" ' bwk.txt ben 28 男 /home/ben/ wumen 48 男 /h...
awk: cmd. line:2: $5>10% awk: cmd. line:2: ^ unexpected newline or end of string [root@centos7 ~]# df ‐h | awk '$5>10' #不加%,会不准,你看,下面把8%的也显示 出来了,下面有解释 文件系统 容量 已用 可用 已用% 挂载点 /dev/mapper/centos_centos7‐root 50G 3.9G 47G 8% ...
awk: cmd. line:1: ^ unexpected newline or end of string 这里就能看出来,应该跟我猜的一样,如果有不对,请大神指点 2017/07/01更新: 之前的方法太蠢了,改进下,因为之前实验失败,所以认为这样是不行的,不过发现好像是之前实验错误: awk '$1=="'$i'"{print $0}' file1 >> urfile === 新需求 ...
awk: cmd. line:1: ^ unexpected newline or end of string 错误二:使用了双引号做为action标识 [root@h129~]# tail /etc/services |awk "{print $0}" 0 0 ... 正确用法: [root@h129~]# tail /etc/services |awk '{print $0}' 3gpp-cbsp 48049/tcp # 3GPP Cell Broadcast Service Protocol ...
line:1: {print awk: cmd. line:1: ^ unexpected newline or end of string [root@exam ~]# awk '{print $1,$2}' /exam/reg.txt Zhang Dandan Zhang Xiaoyu Meng Feixue Wu Waiwai Liu Bingbing Wang Xiaoai Zi Gege Li Youjiu Lao Nanhai [root@exam ~]# 1. 2. 3. 4. 5. 6. 7. 8...
I have tried it and became the error message "unexpected newline or end of string". The good thing is the >test.out works well, I have tried it with my first code and become only the date in the output file. The other gawk -f test.awk test.txt gives a syntax error message. than...
但库可以提供很大帮助。要在shell中运行的正确引用的字符串可以用String::ShellQuote‡构成 ...
In general, each record ends at the next string that matches the regular expression; the next record starts at the end of the matching string. This general rule is actually at work in the usual case, where RS contains just a newline: a record ends at the beginning of the next matching...