Error in system(CMD, intern = TRUE, ignore.stderr = TRUE) : 'perl' not found

[tarek Mohamed]

Hi All,

I am trying to use mosaics package to call peaks for my chip-seq experiment. however I got an error message saying "perl not found", how can I resolve this

>library("mosaics")

>constructBins( infile="input_bowtie_sorted.bed" , fileFormat="bed")

>constructBins(infile="input_bowtie_sorted.bed", fileFormat="bed", outfileLoc="./",byChr=FALSE, useChrfile=FALSE,

              chrfile=NULL, excludeChr=NULL, PET=FALSE,capping=0)

------------------------------------------------------------

Info: setting summary

------------------------------------------------------------

Name of aligned read file: input_bowtie_sorted.bed 

Aligned read file format: BED 

Directory of processed bin-level files: ./ 

Construct bin-level files by chromosome? N 

Is file for chromosome info provided? N 

Data type: Single-end tag (SET)

Average fragment length: 200 

Bin size: 200 

------------------------------------------------------------

Error in system(CMD, intern = TRUE, ignore.stderr = TRUE) : 

  'perl' not found

Thanks

Tarek