Efficiency on the UNIX shell I often find myself manually removing a set of phylogenetic trees from a posterior tree distribution in order to set a burn-in and then combining the post-burnin trees of the individual runs. This action can be done very efficiently using awk on a UNIX shell: inf1=Mrbayes_test.run1.t inf2=Mrbayes_test.run2.t tmpf1=${inf1%.t*}_postBurnin.tre tmpf2=${inf2%.t*}_postBurnin.tre outf=${inf1%.run1.t*}_combined_postBurnin.tre […]