Blog – Page 64 – TRUEANGLE

R barplot for ls command details

commandline session


root>R

R version 3.1.2 (2014-10-31) -- "Pumpkin Helmet"
Copyright (C) 2014 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

  Natural language support but running in an English locale

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> lscalls   png(file="Rbarplot-ls.png")
> barplot(lscalls)
> dev.off
function (which = dev.cur()) 
{
    if (which == 1) 
        stop("cannot shut down device 1 (the null device)")
    .External(C_devoff, as.integer(which))
    dev.cur()
}


> dev.off()
null device 
          1 
>

R ls plot

commandline session

> library(ggplot2)
Loading required package: reshape
Loading required package: plyr

Attaching package: ‘reshape’

The following object(s) are masked from ‘package:plyr’:

    rename, round_any

Loading required package: grid
Loading required package: proto
> lscalls  usecspercall  qplot(lscalls,usecspercall,geom="line")
> plot(lscalls,usecspercall,geom="line")
Warning messages:
1: In plot.window(...) : "geom" is not a graphical parameter
2: In plot.xy(xy, type, ...) : "geom" is not a graphical parameter
3: In axis(side = side, at = at, labels = labels, ...) :
  "geom" is not a graphical parameter
4: In axis(side = side, at = at, labels = labels, ...) :
  "geom" is not a graphical parameter
5: In box(...) : "geom" is not a graphical parameter
6: In title(...) : "geom" is not a graphical parameter
> png(file="Rlsplot.png")
> plot(lscalls,usecspercall,geom="point")
Warning messages:
1: In plot.window(...) : "geom" is not a graphical parameter
2: In plot.xy(xy, type, ...) : "geom" is not a graphical parameter
3: In axis(side = side, at = at, labels = labels, ...) :
  "geom" is not a graphical parameter
4: In axis(side = side, at = at, labels = labels, ...) :
  "geom" is not a graphical parameter
5: In box(...) : "geom" is not a graphical parameter
6: In title(...) : "geom" is not a graphical parameter
> dev.off()
null device
          1
> ggplot(lscalls,usecspercall,geom="point")
Error in ggplot.data.frame(fortify(data), mapping, ...) :
  Mapping should be created with aes or aes_string
>

Erlang shell .

commandline session

$erl
Erlang R15B01 (erts-5.9.1) [source] [64-bit] [async-threads:0] [kernel-poll:false]

Eshell V5.9.1  (abort with ^G)
1> q().
ok
2> $
$erl
Erlang R15B01 (erts-5.9.1) [source] [64-bit] [async-threads:0] [kernel-poll:false]

Eshell V5.9.1  (abort with ^G)
1> h().
ok
2> h()
2> .
1: h()
-> ok
ok
3> pwd().
/home/jeffrin/Downloads
ok
4> cd("..").
/home/jeffrin
ok
5> 1+2.
3
6> 3*2.
6
7> 3-3.
0
8> 6-2
8> .
4
9> 2*v(6).
12
10> math:pi().
3.1415921003589793
11> math:sin(10).
-0.5440211108893698
12> 21
12> 12e23
12> 2*v(12).
* 2: syntax error before: 12
12> k=1.
** exception error: no match of right hand side value 1
13> k=1
13> k
13> .
* 2: syntax error before: k
13> k.
k
14> K=1.
1
15> K.
1
16> K=K+1.
** exception error: no match of right hand side value 2
17> K=K.
1
18> P=2.
2
19> K+P.
3
20> b().
K = 1
P = 2
ok
21> f().
ok
22> b().
ok
23>

R plot firefox + line graph

commandline session

> call
 [1]    11  2088 18088 20958 25695   704  1744   139     6  7612
> usecspc
 [1] 2682   12    1    1    0    6    2   29  667    0
> png(file="Rlinegraph-firefox.png")
> plot(call,usecspc,type="l")
> dev.off()
null device
          1
>

R plot . firefox statistics

commandline session

> call  usecspc  png(file="Rfirefox.png")
> plot(call,usecspc)
> dev.off()
null device
          1
>

R Graphics scatter plot

commandline session

> c(1,2,3,4,5)
[1] 1 2 3 4 5
> x
[1] 1
> c
function (..., recursive = FALSE)  .Primitive("c")
> x  x
[1] 22
> ' x
[1] 35
> w  w
[1] 1 2 3 4 5
> w[3]
[1] 3
> w[0]
numeric(0)
> w[1]
[1] 1
> w[6]
[1] NA
> z  w
[1] 1 2 3 4 5
> z
[1] 10 20 30 14 50
> plot(w,z)
>

GCC COMMANDLINE OPTIONS PART 9

compiler option Testing

$ls
unsigned.c
$gcc unsigned.c
$./a.out

 The Geek Stuff [-10]
$gcc -funsigned-char unsigned.c
$./a.out

 The Geek Stuff [246]
$cat unsigned.c
#include<stdio.h>

int main(void)
{
  char c = -10;
  // Print the string
   printf("n The Geek Stuff [%d]n", c);
   return 0;
}
$

GCC COMMANDLINE OPTIONS PART 8 -ansi

commandline session

$cat main.c
#include<stdio.h>
#include<math.h>

int main(void)
{
 int i=0;
   float y;
   printf("n The Geek Stuff [%d]n", i);
   y=sinf(2.5);
   printf("%fn",y);
   return 0;
}
$gcc -ansi main.c
/tmp/ccBNR3rx.o: In function `main':
main.c:(.text+0x3c): undefined reference to `sinf'
collect2: error: ld returned 1 exit status
$gcc  main.c
$

GCC COMMANDLINE OPTIONS PART 7

commandline session

$gcc -v main.c
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.7.2-4' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.7.2 (Debian 4.7.2-4)
COLLECT_GCC_OPTIONS='-v' '-mtune=generic' '-march=x86-64'
 /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1 -quiet -v -imultiarch x86_64-linux-gnu main.c -quiet -dumpbase main.c -mtune=generic -march=x86-64 -auxbase main -version -o /tmp/cc6KHWV5.s
GNU C (Debian 4.7.2-4) version 4.7.2 (x86_64-linux-gnu)
	compiled by GNU C version 4.7.2, GMP version 5.0.5, MPFR version 3.1.0-p10, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include  search starts here:
 /usr/lib/gcc/x86_64-linux-gnu/4.7/include
 /usr/local/include
 /usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed
 /usr/include/x86_64-linux-gnu
 /usr/include
End of search list.
GNU C (Debian 4.7.2-4) version 4.7.2 (x86_64-linux-gnu)
	compiled by GNU C version 4.7.2, GMP version 5.0.5, MPFR version 3.1.0-p10, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: c5f63dedeacd449634699df94fe3d914
COLLECT_GCC_OPTIONS='-v' '-mtune=generic' '-march=x86-64'
 as -v --64 -o /tmp/ccw9UtSZ.o /tmp/cc6KHWV5.s
GNU assembler version 2.22 (x86_64-linux-gnu) using BFD version (GNU Binutils for Debian) 2.22
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.7/:/usr/lib/gcc/x86_64-linux-gnu/4.7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.7/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.7/:/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-mtune=generic' '-march=x86-64'
 /usr/lib/gcc/x86_64-linux-gnu/4.7/collect2 --sysroot=/ --build-id --no-add-needed --eh-frame-hdr -m elf_x86_64 --hash-style=both -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.7/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/4.7 -L/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.7/../../.. /tmp/ccw9UtSZ.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-linux-gnu/4.7/crtend.o /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/crtn.o
$

GCC COMMANDLINE OPTIONS PART 6

commandline session

$ gcc -c -Wall -Werror -fPIC main.c
main.c: In function ‘main’:
main.c:8:10: error: ‘i’ is used uninitialized in this function [-Werror=uninitialized]
cc1: all warnings being treated as errors
$vim main.c
$cat main.c
#include<stdio.h>
#include<math.h>

int main(void)
{
   float y;
   printf("n The Geek Stuff [%d]n", i);
   y=sinf(2.5);
   printf("%fn",y);
   return 0;
}
$ gcc -c -Wall -Werror -fPIC main.c
main.c: In function ‘main’:
main.c:7:39: error: ‘i’ undeclared (first use in this function)
main.c:7:39: note: each undeclared identifier is reported only once for each function it appears in
$vim main.c
$cat main.c
#include
#include

int main(void)
{
 int i=0;
   float y;
   printf("n The Geek Stuff [%d]n", i);
   y=sinf(2.5);
   printf("%fn",y);
   return 0;
}
$ gcc -c -Wall -Werror -fPIC main.c
$ls main.o
main.o
$rm main.o
$ gcc -c -Wall -Werror -fPIC main.c
$ls main.o
main.o
$gcc -shared -o libmain.so main.o
$ldd libmain.so
	linux-vdso.so.1 =>  (0x00007fffbbc64000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f74b1bfe000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f74b21b4000)
$