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Grep a term from a file in Linux. $ grep -A1 "term" input.fasta > output.fasta #Grep #Term

Linux command to find the file contains a string "LOCK_EX": grep -Ril "LOCK_EX" / #Root #Find #Linux #Grep #search

Show before(B) and after(A) the matching region $ grep -B 3 -A 2 foo README.txt #Linux #Tricks #View #Grep

Extract values : cat seeALN.xls | grep -w "scaffold_1" to #grep #exact #matching words from file seeALN.xls

Extract ten lines below matched string with grep: grep -A 10 "string" filename1 ; -B for above and -C for both #grep #Linux #Tricks #Lines #Matches

Grep all the processor in Linux system $ grep "^processor" /proc/cpuinfo | tail -n 1 | awk '{print $3}' #Grep #OS #Linux #Processor

Count the number of sequences in fastaq file. grep -c '^@' sample1.fq #Fastaq #Count #Number #Grep #Dirty #Oneliner #NGS

To count number of fasta entries, I use: grep -c '^>' mySequences.fasta #Perl #Count #Number #Fasta #Linux #Grep

Count the number of "pattern" occurrence in a file grep -o 'pattern' anc.annots.gff | wc -l #Linux #grep #Count #Number #Occurrence