# .css-1ydg16i{color:#000;-webkit-text-decoration:none;text-decoration:none;}UNPKG

 1 # Command Line Interface (CLI)  2   3 When math.js is installed globally using npm, its expression parser can be used  4 from the command line. To install math.js globally:  5   6 bash  7 $npm install -g mathjs  8   9   10 Normally, a global installation must be run with admin rights (precede the  11 command with sudo). After installation, the application mathjs is available  12 via the command line:  13   14 bash  15 $ mathjs  16 > 12 / (2.3 + 0.7)  17 4  18 > 12.7 cm to inch  19 5 inch  20 > sin(45 deg) ^ 2  21 0.5  22 > 9 / 3 + 2i  23 3 + 2i  24 > det([-1, 2; 3, 1])  25 -7  26   27   28 The command line interface can be used to open a prompt, to execute a script,  29 or to pipe input and output streams:  30   31 bash  32 $mathjs # Open a command prompt  33 $ mathjs script.txt # Run a script file, output to console  34 $mathjs script1.txt script2.txt # Run two script files  35 $ mathjs script.txt > results.txt # Run a script file, output to file  36 $cat script.txt | mathjs # Run input stream, output to console  37 $ cat script.txt | mathjs > results.txt # Run input stream, output to file  38   39   40 You can also use it to create LaTeX from or sanitize your expressions using the  41 --tex and --string options:  42   43 bash  44 $mathjs --tex  45 > 1/2  46 \frac{1}{2}  47   48   49 bash  50 $ mathjs --string  51 > (1+1+1)  52 (1 + 1 + 1)  53   54   55 To change the parenthesis option use the --parenthesis= flag:  56   57 bash  58 $mathjs --string --parenthesis=auto  59 > (1+1+1)  60 1 + 1 + 1  61   62   63 bash  64 $ mathjs --string --parenthesis=all  65 > (1+1+1)  66 (1 + 1) + 1  67   68   69 # Command line debugging (REPL)  70   71 For debugging purposes, bin/repl.js provides a REPL (Read Evaluate Print Loop)  72 for interactive testing of mathjs without having to build new build files after every  73 little change to the source files. You can either start it directly (./bin/repl.js) or  74 via node (node bin/repl.js).  75   76 You can exit using either [ctrl]-[C] or [ctrl]-[D].  77   78 bash  79 \$ ./bin/repl.js  80 > math.parse('1+1')  81 { op: '+',  82  fn: 'add',  83  args:  84  [ { value: '1', valueType: 'number' },  85  { value: '1', valueType: 'number' } ] }  86 >  87