r - removing everything after first 'backslash' in a string

Question

I have a vector like below

vec <- c("abcedwwww", "nmnggg", "rerqqqfdf"......)

I want to remove everything after as soon as first slash is encountered, like below

newvec <- c("abc","nmn","rer")

Thank you.

My original vector is as below (only the head)

[1] "peoria ave
ste 
peoria"                      [2]   "wood dr
phoenix"                                  
"central ave
phoenix"                            
[4] "southern ave
phoenix"                         [5]   "happy valley rd
ste   

glendaleaz "               "the americana at brand
 americana way
glendale"

Here the problem is my original csv file does not contain backslashes, but when i read it backslashes appear. Original csv file is as below

[1] "peoria ave               [2] "wood dr
     nste                          nphoenix"       
     npeoria"

As you can see, they are actually separated by "ENTER" but when i read it in R using read.csv() they are replaced by backslashes.

Answer 1

another solution :

 sub("\\.*", "", x)