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Remove conda environment completely $ conda env remove -n env_name #Remove #Conda #Environment

Remove empty line from fasta. $ sed -i '/^$/d' standard_output.final.scaffolds_online.fasta #Empty #Fasta #Remove

#Remove #smartbell from #pacbio #removesmartbell.sh https://github.com/BioInfoTools/BBMap/blob/master/sh/removesmartbell.sh

perl -pe 's/[^AGTC\n]/N/gi unless m/>/;' /media/urbe/TOSHIBALAB/falconUnzip/SSPACED_P2/scaffolds.fasta > /media/urbe/TOSHIBALAB/falconUnzip/SSPACED_P2/scaffolds_corrected.fasta #Remove #Non-ATCG

Remove the sequence by fasta ids. awk 'BEGIN{while((getline<"ids.txt")>0)l[">"$1]=1}/^>/{f=!l[$1]}f' seq.fa #Remove #Delete #ids #fasta

#Remove a #sequence by id from multifasta: cat vaga.fa | awk '{if (substr($0,1) == ">scaffold_1 1087316 bp") censor=1; else if (substr($0,1,1) == ">") censor=0; if (censor==0) print $0}' > fixed.fasta

awk 'BEGIN {RS = ">" ; FS = "\n" ; ORS = ""} {if ($2) print ">"$0}' all_p_ctg.fa > all_p_ctg_CORRECTED.fa #remove #empty #clean #fasta

Remove the unwanted characters from Fasta file: sed -e '/^[^>]/s/[^ATGCatgc]/N/g' infile.fa #sed #unwanted #illegal #remove #correct #fasta #linux

Remove the fasta with zero size: awk 'BEGIN {RS = ">" ; FS = "\n" ; ORS = ""} $2 {print ">"$0}' input.fas > output.fas #fasta #remove

Remove duplicated lines from text file. $ awk '!seen[$0]++' allIds #duplicate #lines #remove #awk

Remove unwanted character from fasta file. $ sed -e '/^[^>]/s/[^ATGCatgc]/N/g' file.fa #IUPAC #Special #Character #Remove

Remove four beginning characters from each line of the file. $ sed 's/^....//' genbank.txt #Remove #Sed #Text

#Remove all line that start with # file: $ sed '/^#/ d' filename #line #sed #linux

Remove the fasta description and just keep the identifier. perl -p -i -e 's/>(.+?) .+/>$1/g' sample1.fa #Perl #Oneliner #Trick #Tips #Fasta #Identifier #Remove

The syntax to remove last character from line or word is as follows: x="foo bar" echo "${x%?}" #Remove #Last #Bash #Linux