bashdb.pre

UNIX下SH的实现源码

# bashdb.pre - Bourne-Again Shell Debugger preamble file
# prepended to script being ddebugged
#arguments:
# $1 = name of original guineapig script
# $2 = dir where temp files are stored
# $3 = dir where bashdb.pre and bashdb.fns are stored

# separate history file for bashdb
HISTFILE=~/.bashdb_history
set -o history
set +H

# prompt for trace line
PS4="${1}"

_dbgfile=$0
_guineapig=$1
_tmpdir=$2
_libdir=$3
shift 3				#move user's args into place

. $_libdir/bashdb.fns		#read in the debugger functions

_linebp=
_stringbp=
let _trace=1			#init execution trace flag to on

#read guineapig file into _lines array
_readin 1

trap _cleanup EXIT		#erase files before exiting

let _steps=1			#no. of statements to run after setting trap
#set LINENO, gets incremented to 1
LINENO=0
trap '_steptrap $LINENO' DEBUG
: