Development notes: Debugging websites

Quick reference

Mac: \r

Unix: \n

Windows: \r\n

vi s/,/,\r/

$CRLF = "\015\012";

perl -le'$q = "\047"; print $q' # single quote

perl -MDevel::Cover=+ignore,.*,-select,^lib,-select,^t,-silent,on t/path/to/test.t

python -m SimpleHTTPServer 8080

python3 -m http.server 8080

warn "mojo response = ".$t->tx->res->to_string;

...->or(sub { diag("Result = ".$t->tx->res->to_string) });

use Data::Printer { class => { internals => 0, inherited => 'public' } };

my $r=\@_; $l->debug("entering ".( caller(0) )[3])." with ". sub { $l->dump(args => $r) }); # log calls to subroutines

patch -p0 < file.patch

DBIC_TRACE_PROFILE=console DBIC_TRACE=1

TEST_METHOD=foo

$Data::Dumper::Maxdepth = 1;

$DB::single = 1;

echo -ne "\033]0;"some title"\007" # set putty title

shopt -s checkwinsize; reset # fix terminal display issue

# bash strict mode

set -euo pipefail

IFS=$'\n\t'

# debug mode

set -vx

(s)printf:

printf '<%+d>', 12; # prints "<+12>"

printf '<%6s>', 12; # prints "< 12>"

printf '<%-6s>', 12; # prints "<12 >"

eval $(dircolors|sed 's/di=01;34/di=01;36/'); # light blue directories

if [ "$(id -u)" != "0" ]; then

echo "This script must be run as root"

exit 1

fi

| python -m json.tool # sorts keys

| json_pp # doesn't sort keys (perl JSON module)

Search and replace over two lines:

sed ':a;N;$!ba;s/\n second line: / second line: /g'

Bash quotes: '\'' & '"'"'

print "debug = ".Dumper({%{{$_->get_columns}}{qw/id shipment_id/}}) foreach $shipment_rs->items; # DBIC quick peek

print $result->{_column_data} # DBIC quicker peek

require Carp; Carp::cluck "got here";

telnet host port

openssl s_client -debug -connect host:port

www.tablesgenerator.com

Development notes

Debugging websites

Search this blog

Highlights

Quick reference

Links

Blog Archive

Tags

Development notes

Debugging websites

Search this blog

Highlights

Quick reference

Links

Blog Archive

Subscribe To

Tags