我想在unix中替换第二种模式。 输入文件: -
12345|45345|TaskID|dksj|kdjfdsjf|TaskID|12
1245|425345|TaskID|dksj|kdjfdsjf|TaskID|12
1234|25345|TaskID|dksj|TaskID|kdjfdsjf|12|TaskID
123425|65345|TaskID|dksj|kdjfdsjf|12|TaskID
123425|15325|TaskID|dksj|kdjfdsjf|12
示例输出文件: -
12345|45345|TaskID|dksj|kdjfdsjf|TaskID1|12
1245|425345|TaskID2|dksj|kdjfdsjf|TaskID3|12
1234|25345|TaskID|dksj|TaskID1|kdjfdsjf|12|TaskID2
123425|65345|TaskID3|dksj|kdjfdsjf|12|TaskID4
123425|15325|TaskID|dksj|kdjfdsjf|12
答案 0 :(得分:0)
您的示例与您的问题不符, 所以我只展示如何替换给定模式的每一个匹配
使用awk
。它是用于命令行文本处理的非常强大的工具
replace.sh
如下:
cat | awk -v search="$1" -v repl="$2" '
BEGIN {
flag = 0
}
{
split($0, a, search)
len = length(a)
for (f = 1; f < len; f += 1) {
printf "%s%s", a[f], (flag % 2 == 0 ? search : repl)
flag += 1
}
printf "%s%s", a[len], ORS
}
'
cat input.txt | ./replace.sh TaskID TaskID1