um-mode/shell/last.sh
2024-02-17 09:15:41 -08:00

21 lines
552 B
Shell
Executable file

#!/bin/bash
# Get the last file name of any numbered series of text files.
# file format:
# in regex terms:
# [0-9]+\.[.*\.]*md|txt
# in plain terms:
# [leading numbers with consistent width].[optional string descriptor and . separator][md|txt]
UMALLFILES=`ls | grep -E '^[[:digit:]].*\.(md|txt)'`
LASTSTATUS=$?
# NOTE: if we don't stop and signal here, tail will exit 0
if [ "$LASTSTATUS" -ne 0 ]; then
echo "no files found" >&2
exit 1
fi
# NOTE: if var isn't quoted echo will change newlines to spaces
echo "$UMALLFILES" | tail -n 1