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Replace space with tab. $ awk -v OFS="\t" '$1=$1' file1 #tab #space #replace #awk

You can use the df command to know the free space in the disk: $ df -h . #df #Linux #List #Free #Space

To know the size of the directory in current folder. $ du -sh * #Size #Directory #List #Space #Linux #du

Replace space with tab: perl -lpe 's/\s/\t/g' < trf_file.dat > outfile.txt #TRF #Tab #Space #Replace #Perl #PerlTrick #PerlOneliner

Delete space from FASTA header: perl -pe 's/>\S+\K.+//' < file.fasta > new_file.fasta #PerlOneLiner #Trick #Perl #Space #Fasta

Remove the blank space from a fasta file. perl -nlwe 'tr/ //d; print if length' fileName #Delete #Space #Fasta #Perl #Oneliner