SYSTEM Call an External Program

Section: Operating System Functions

Usage

The system function allows you to call an external program from within FreeMat, and capture the output. The syntax of the system function is 
  y = system(cmd)

where cmd is the command to execute. The return array y is of type cell-array, where each entry in the array corresponds to a line from the output.

Example

Here is an example of calling the ls function (the list files function under Un*x-like operating system). 
--> y = system('ls')

y = 

 Columns 1 to 3

 [chain1.m] [chain2.m] [chain3.m] 

 Columns 4 to 6

 [conv2_eqn1.png] [conv2_eqn.aux] [conv2_eqn.dvi] 

 Columns 7 to 9

 [conv2_eqn.log] [conv2_eqn.tex] [cumprod_eqn1.png] 

 Columns 10 to 12

 [cumprod_eqn.aux] [cumprod_eqn.dvi] [cumprod_eqn.log] 

 Columns 13 to 15

 [cumprod_eqn.tex] [cumsum_eqn1.png] [cumsum_eqn.aux] 

 Columns 16 to 18

 [cumsum_eqn.dvi] [cumsum_eqn.log] [cumsum_eqn.tex] 

 Columns 19 to 21

 [do_jit_test.m] [eig_eqn1.png] [eig_eqn2.png] 

 Columns 22 to 24

 [eig_eqn3.png] [eig_eqn4.png] [eig_eqn5.png] 

 Columns 25 to 27

 [eig_eqn6.png] [eig_eqn.aux] [eig_eqn.dvi] 

 Columns 28 to 30

 [eig_eqn.log] [eig_eqn.tex] [evenoddtest.m] 

 Columns 31 to 33

 [fft1.jpg] [fft1.png] [fft2.jpg] 

 Columns 34 to 36

 [fft2.png] [fft_eqn1.png] [fft_eqn2.png] 

 Columns 37 to 39

 [fft_eqn3.png] [fft_eqn4.png] [fft_eqn.aux] 

 Columns 40 to 42

 [fft_eqn.dvi] [fft_eqn.log] [fft_eqn.tex] 

 Columns 43 to 45

 [find_eqn1.png] [find_eqn.aux] [find_eqn.dvi] 

 Columns 46 to 48

 [find_eqn.log] [find_eqn.tex] [help] 

 Columns 49 to 51

 [jit_test001.m] [jit_test002.m] [jit_test003.m] 

 Columns 52 to 54

 [jit_test004.m] [jit_test005.m] [jit_test006.m] 

 Columns 55 to 57

 [jit_test007.m] [jit_test008.m] [jit_test009.m] 

 Columns 58 to 60

 [jit_test010.m] [jit_test011.m] [jit_test012.m] 

 Columns 61 to 63

 [jit_test013.m] [jit_test014.m] [jit_test015.m] 

 Columns 64 to 66

 [jit_test016.m] [jit_test017.m] [jit_test018.m] 

 Columns 67 to 69

 [jit_test019.m] [jit_test020.m] [jit_test021.m] 

 Columns 70 to 72

 [jit_test022.m] [jit_test023.m] [jit_test024.m] 

 Columns 73 to 75

 [loadsave.dat] [max_eqn1.png] [max_eqn2.png] 

 Columns 76 to 78

 [max_eqn3.png] [max_eqn.aux] [max_eqn.dvi] 

 Columns 79 to 81

 [max_eqn.log] [max_eqn.tex] [mean_eqn1.png] 

 Columns 82 to 84

 [mean_eqn.aux] [mean_eqn.dvi] [mean_eqn.log] 

 Columns 85 to 87

 [mean_eqn.tex] [min_eqn1.png] [min_eqn2.png] 

 Columns 88 to 90

 [min_eqn3.png] [min_eqn.aux] [min_eqn.dvi] 

 Columns 91 to 93

 [min_eqn.log] [min_eqn.tex] [nargintest.m] 

 Columns 94 to 96

 [nargouttest.m] [source_test] [source_test_script.m] 

 Columns 97 to 99

 [test_assignin1.m] [test_assignin2.m] [test_bin2int1.m] 

 Columns 100 to 102

 [test_bitand1.m] [test_bitor1.m] [test_bitxor1.m] 

 Columns 103 to 105

 [test.bmp] [test_builtin1.m] [test_cell1.m] 

 Columns 106 to 108

 [test_clear1.m] [test_clear2.m] [test_conv2_1.m] 

 Columns 109 to 111

 [test_ctype1.m] [test.dat] [test_dcomplex1.m] 

 Columns 112 to 114

 [test_diag1.m] [test_diag2.m] [test_diag3.m] 

 Columns 115 to 117

 [test_diag4.m] [test_diag5.m] [test_dlmread1.m] 

 Columns 118 to 120

 [test_eig1.m] [test_eig2.m] [test_eig3.m] 

 Columns 121 to 123

 [test_eig4.m] [test_eig5.m] [test_eig6.m] 

 Columns 124 to 126

 [test_empty.m] [test_eps1.m] [test_error1.m] 

 Columns 127 to 129

 [test_eval1.m] [test_eval2.m] [test_eval3.m] 

 Columns 130 to 132

 [test_evalin1.m] [test_evalin2.m] [test_exist1.m] 

 Columns 133 to 135

 [test_exist2.m] [test_feval1.m] [test_fieldnames1.m] 

 Columns 136 to 138

 [test_imwrite_imread.m] [test_int2bin1.m] [test_isset1.m] 

 Columns 139 to 141

 [test_jit.m] [test_lasterr1.m] [test_load1.m] 

 Columns 142 to 144

 [test_lu1.m] [test_lu2.m] [test_nargin1.m] 

 Columns 145 to 147

 [test_nargin2.m] [test_permute1.m] [test_permute2.m] 

 Columns 148 to 150

 [test_repmat1.m] [test_repmat2.m] [test_repmat3.m] 

 Columns 151 to 153

 [test_save1.m] [test_source.m] [test_sparse20.m] 

 Columns 154 to 156

 [test_sparse21.m] [test_sparse45.m] [test_sparse58.m] 

 Columns 157 to 159

 [test_sparse68.m] [test_sparse70.m] [test_sparse74.m] 

 Columns 160 to 162

 [test_sparse75.m] [testtext] [test_typeof1.m] 

 Columns 163 to 165

 [test_typeof2.m] [test_typeof3.m] [test_typeof4.m] 

 Columns 166 to 168

 [test_typeof5.m] [test_typeof6.m] [test_uint64_1.m] 

 Columns 169 to 169

 [toolbox] 

--> y{1}

ans = 
chain1.m