File size: 2,626 Bytes
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#!/bin/bash
# Mission Statement:
# This script displays the contents of specified files with formatted headers.
# It provides optional file size limits through the -k flag (specified in KB).
# Without the -k flag, files are shown in their entirety.
# With -k flag, files larger than the specified size are truncated with a warning.
# The script handles both Linux and MacOS systems using compatible stat commands.
# Color output is available via the -c flag for better visual organization.
# ANSI color codes
BLUE='\033[0;34m'
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m' # No Color
usage() {
echo "Usage: $(basename $0) [-k size_in_kb] [-c] files..."
echo " -k: Maximum file size in KB (optional)"
echo " -c: Enable color output"
exit 1
}
# Initialize variables
COLOR=false
MAX_SIZE_KB=""
# Parse command line options
while getopts "k:c" opt; do
case $opt in
k) MAX_SIZE_KB="$OPTARG";;
c) COLOR=true;;
?) usage;;
esac
done
# Shift past the options
shift $((OPTIND-1))
# Check if any files were specified
if [ $# -eq 0 ]; then
usage
fi
# Get file size in KB (compatible with both Linux and MacOS)
get_file_size() {
if [[ "$OSTYPE" == "darwin"* ]]; then
stat -f %z "$1"
else
stat --format=%s "$1"
fi
}
# Format and display file header
show_header() {
local file="$1"
local size_bytes=$(get_file_size "$file")
local size_kb=$((size_bytes / 1024))
if $COLOR; then
echo -e "\n${BLUE}=== File: ${GREEN}$file${BLUE} (${size_kb}KB) ===${NC}"
else
echo -e "\n=== File: $file (${size_kb}KB) ==="
fi
}
# Process each file
for file in "$@"; do
if [ ! -f "$file" ]; then
if $COLOR; then
echo -e "${RED}Error: '$file' does not exist or is not a regular file${NC}" >&2
else
echo "Error: '$file' does not exist or is not a regular file" >&2
fi
continue
fi
show_header "$file"
if [ -n "$MAX_SIZE_KB" ]; then
size_bytes=$(get_file_size "$file")
size_kb=$((size_bytes / 1024))
if [ $size_kb -gt $MAX_SIZE_KB ]; then
if $COLOR; then
echo -e "${RED}File size ($size_kb KB) exceeds limit ($MAX_SIZE_KB KB). Showing first $MAX_SIZE_KB KB:${NC}"
else
echo "File size ($size_kb KB) exceeds limit ($MAX_SIZE_KB KB). Showing first $MAX_SIZE_KB KB:"
fi
head -c $((MAX_SIZE_KB * 1024)) "$file"
echo -e "\n[Truncated...]"
else
cat "$file"
fi
else
cat "$file"
fi
done
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