blog.jianingy.com

This patch makes tabbed extension support directly tab access by pressing ctrl + n. Also, I applied some color changs which makes the tab bar more comfortable as i thought.

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diff -rupN orig/tabbed new/tabbed
--- orig/tabbed	2009-04-20 10:23:35.000000000 +0800
+++ new/tabbed	2009-04-20 10:29:38.000000000 +0800
@@ -10,8 +10,8 @@ sub refresh {
 
    my @ofs;
 
-   substr $text, 0, 7, "[NEW] |";
-   @$rend[0 .. 5] = ($self->{rs_tab}) x 6;
+   substr $text, 0, 7, "  NEW  ";
+   @$rend[0 .. 5] = ($self->{rs_tabbar}) x 6;
    push @ofs, [0, 6, sub { $_[0]->new_tab }];
 
    my $ofs = 7;
@@ -26,7 +26,7 @@ sub refresh {
       my $txt = "$act$idx$act";
       my $len = length $txt;
 
-      substr $text, $ofs, $len + 1, "$txt|";
+      substr $text, $ofs, $len + 1, "$txt ";
       @$rend[$ofs .. $ofs + $len - 1] = ($self->{rs_tab}) x $len
          if $tab == $self->{cur};
 
@@ -224,10 +224,10 @@ sub on_init {
    my $tabfg = $self->x_resource ("tab-fg");
    my $tabbg = $self->x_resource ("tab-bg");
 
-   defined $fg    or $fg    = 3;
-   defined $bg    or $bg    = 0;
-   defined $tabfg or $tabfg = 0;
-   defined $tabbg or $tabbg = 1;
+   defined $fg    or $fg    = 0;
+   defined $bg    or $bg    = 7;
+   defined $tabfg or $tabfg = 12;
+   defined $tabbg or $tabbg = 0;
 
    $self->{rs_tabbar} = urxvt::SET_COLOR (urxvt::DEFAULT_RSTYLE, $fg    + 2, $bg    + 2);
    $self->{rs_tab}    = urxvt::SET_COLOR (urxvt::DEFAULT_RSTYLE, $tabfg + 2, $tabbg + 2);
@@ -333,7 +333,12 @@ sub tab_key_press {
          $self->make_current ($self->{tabs}[$idx2]);
 
          return 1;
-      }
+      } elsif ($keysym > 48 && $keysym < 58) {
+         my ($idx) = $keysym - 49;
+         $self->make_current ($self->{tabs}[$idx]) if $self->{tabs}[$idx] != $tab and $idx < @{ $self->{tabs}};
+
+         return 1;
+	  }
    }
 
    ()

Once, set environment variable LD_PRELOAD to a shared library, it can be loaded no matter whether your program will load or not load it.

e.g.

[jianingy(0)@nby ~]$ ldd /opt/bamboo/bin/bamboo 
	linux-gate.so.1 =>  (0x0082a000)
	libdl.so.2 => /lib/libdl.so.2 (0x009c7000)
	libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x051fc000)
	libm.so.6 => /lib/libm.so.6 (0x0099c000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x05110000)
	libc.so.6 => /lib/libc.so.6 (0x00110000)
	/lib/ld-linux.so.2 (0x00801000)

The alignment manner on 32bits and 64bits system are usually different. On a 32bits box, a struct is aligned by 4 bytes, while on a 64bits box it is 8 bytes.

Therefore, when you need to run you program both on 32bits and 64 bits, it's better to set up the alignment to four manually by using "#pragma pack"

For example,

#pragma pack(push, 4)
    typedef struct {
        int size;
        int last;
    } TailHeader
#pragma pack(pop)

Under many linux distributions, the led for wifi of your notebook will keep flashing while there are transmitting operations.It drives us crazy

To solve this problem, you need just a small script.

#!/bin/sh

if [ "`id -u`" != "`id -u root`" ]; then
    echo "`whoami`: you need root priviledge to run this application. Invkoing sudo ..." 
    exec sudo bash -c "$0 $@"
fi

for trigger in /sys/class/leds/iwl-*X/trigger; do
    echo none > $trigger
    cat $trigger
done