发现之前与QUOT替换字符;：＆QUOT; [英] find and replace characters before ":"

问题描述

我具有包含一定数目的行的文件。每一行看起来是这样的：

I have a file containing a certain number of lines. Each line looks like this:

TF_list_to_test10004/Nus_k0.345_t0.1_e0.1.adj:PKMYT1

我想所有之前删除：为了留住这是唯一一个基因名PKMYT1字符。
因为我不是在正则表达式脚本专家谁能帮助我做到这一点使用的Unix（SED或AWK）或R'

I would like to remove all before ":" character in order to retain only PKMYT1 that is a gene name. Since I'm not an expert in regex scripting can anyone help me to do this using Unix (sed or awk) or in R?

推荐答案

下面是R中做的两种方式：

Here are two ways of doing it in R:

foo <- "TF_list_to_test10004/Nus_k0.345_t0.1_e0.1.adj:PKMYT1"

# Remove all before and up to ":":
gsub(".*:","",foo)

# Extract everything behind ":":
regmatches(foo,gregexpr("(?<=:).*",foo,perl=TRUE))

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