I want to load many files in the R. The names of the files are "Sim1.txt", "
Sim2.txt", "Sim3.txt", "Sim4.txt", "Sim5.txt" and so on.
Can I read them at one time? What should I do? I can give the same names in
R.
Thanks.

For example:
> tst=paste("Sim",1:20,".txt",sep="") # the file names
> tst
 [1] "Sim1.txt"  "Sim2.txt"  "Sim3.txt"  "Sim4.txt"  "Sim5.txt"  "Sim6.txt"
 [7] "Sim7.txt"  "Sim8.txt"  "Sim9.txt"  "Sim10.txt" "Sim11.txt" "Sim12.txt"
[13] "Sim13.txt" "Sim14.txt" "Sim15.txt" "Sim16.txt" "Sim17.txt" "Sim18.txt"
[19] "Sim19.txt" "Sim20.txt"

> data.name=paste("Sim",1:20,sep="") # the file names in R
> data.name
 [1] "Sim1"  "Sim2"  "Sim3"  "Sim4"  "Sim5"  "Sim6"  "Sim7"  "Sim8"  "Sim9"
[10] "Sim10" "Sim11" "Sim12" "Sim13" "Sim14" "Sim15" "Sim16" "Sim17" "Sim18"
[19] "Sim19" "Sim20"

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