source stdlib.sh
SECONDS=0
log_info "Program started"
# the default log level is INFO; override it to DEBUG
set_log_level DEBUG
log_debug "Running step 1"
# code for step 1
log_warn "This is a warning"
required_file=/path/to/required/file
if [[ ! -f $required_file ]]; then
log_error "File '$required_file' does not exist, skipping this step"
else
# log the contents of this file in DEBUG mode
log_debug_file "$required_file"
log_verbose "Calling process_file"
process_file "$required_file"
log_verbose "Call to process_file finished"
fi
log_info "Program finished, elapsed time = $SECONDS seconds" # Pass each log line as a separate argument
log_info "This is a multi-line log" "This is the second line" "This is the last line"
# store log lines in an array and pass the array to the logging function
log_lines=("log line 1" "log line 2" "log line 3")
log_debug "${log_lines[@]}"
source stdlib.sh
path=/path/to/required/dir
[[ -d $path ]] || fatal_error "Directory '$path' does not exist"
call_some_function; exit_if_error $? "Some function failed"