UNIX for Beginners Questions & Answers

A1.b.x
A2.d.e.f
A3.g.h.i
A4.j.x
A5.k.l.m
A6.n.o.p

A5.k.l.m
A6.n.o.p

for x in $(ls -r A[0-9]* | awk '/x$/ {exit} 1'); do echo $x; done
A6.n.o.p
A5.k.l.m

$ ls -1 april/
A1.b.x
A2.d.e.f
A3.g.h.i
A4.j.x
A5.k.l.m
A6.n.o.p

#!/bin/bash
# script name: after_last_x.sh

# Expects the name of the directory to process
# Script lives outside to avoid being included
cd "$1"

# Place holder for files found
fnames=()

# Start processing the list
for f in $(echo *); do
    # Clear the place holder if the marked file is found
    [[ $f =~ x$ ]] && fnames=() && continue
    # Add to place holder after last marked file
    fnames+=("$f")
done
# Display result
printf "%s\n" ${fnames[@]}

$ bash after_last_x.sh april/
A5.k.l.m
A6.n.o.p

for f in *; do

printf "%s\n" "${fnames[@]}"

for f in "${fnames[@]}"; do echo "$f"; done
for f in "$@"; do echo "$f"; done

for x in $(ls -r A[0-9]* | awk '/x$/ {exit} 1'); do echo $x; done

/bin/ls: cannot access A[0-9]*: No such file or directory

uname -a

Linux (server name) 3.0.101-108.52-default #1 SMP Tue May 29 19:42:53 UTC 2018 (80e6815) x86_64 x86_64 x86_64 GNU/Linux