Spawning Process _ Golang

This is a creation in Article, where the information may have evolved or changed.

Sometimes our Go programs need to spawn other, non-go process. For example, the syntax highlighting on this site was implemented by spawning a pygmentize process from a Go program. Let's look at a few examples of spawning processes from Go

Package Mainimport ("FMT"    "Io/ioutil"    "os/exec") Func main () {datecmd:= Exec.command ("Date") Dateout, err:=datecmd.output ()ifErr! =Nil {panic (err)} FMT. Println ("> Date") fmt. Println (string(dateout)) Grepcmd:= Exec.command ("grep","Hello") Grepin, _:=grepcmd.stdinpipe () Grepout, _:=grepcmd.stdoutpipe () Grepcmd.start () Grepin.write ([]byte("Hello Grep\ngoodbye grep") ) Grepin.close () Grepbytes, _:=Ioutil. ReadAll (Grepout) grepcmd.wait () fmt. Println ("> grep Hello") fmt. Println (string(grepbytes)) Lscmd:= Exec.command ("Bash","- C","ls-a-l-h") Lsout, err:=lscmd.output ()ifErr! =Nil {panic (err)} FMT. Println ("> Ls-a-l-h") fmt. Println (string(lsout))}

>datewed APR1  -: the: +Cst ->grep hellohello grep> Ls-a-L-Htotal3648drwxr-xr-x -XJK Staff 544B APR1  -: the. DRWXR-xr-x+ -XJK Staff1.0K Mar6  -:xx ..-rw-r--r--@1XJK Staff6.0K Mar -  One: + . Ds_store-rw-r--r--1XJK Staff 838B Mar -  -: -Reading.go-rw-r--r--1XJK Staff 553B Mar -  -: AUrl.go-rw-r--r--1XJK Staff 598B Mar -  -: $Writing.go-rw-r--r--1XJK Staff 402B Mar -  -: atBase64.go-rw-r--r--1XJK Staff 447B Mar to  -: -Commandlineflags.go-rwxr-xr-x1XJK Staff1.7MMar to  -: +commonlineargument-rw-r--r--1XJK Staff 209B Mar to  -: -Commonlineargument.go-rw-r--r--1XJK Staff 261B APR1  -: GenevaEnvironmentvariables.go-rw-r--r--1XJK Staff 298B Mar to  -: theLinefilters.go-rw-r--r--1XJK Staff 384B Mar -  -:GenevaNumber_parsing.go-rw-r--r--1XJK Staff 189B Mar -  -: -Sha.go-rw-r--r--1XJK Staff 720B APR1  -: theSpawningprocess.go-rwxr-xr-x1XJK Staff 243B Mar -  One: -Urllib001.p

Summarize:

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