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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"child_process.spawn sh not killable","articleBody":"Comming from here:\nhttps://github.com/keithamus/parallelshell/issues/22\n\n(btw: Usecase for #1009)\n\nEverytime I need to spawn a process I do it like this\n\n``` js\nif (process.platform === 'win32') {\n    sh = 'cmd';\n    shFlag = '/c';\n} else {\n    sh = 'sh';\n    shFlag = '-c';\n}\nvar child = spawn(sh,[shFlag,cmd], {\n  cwd: process.cwd,\n  env: process.env,\n  stdio: ['pipe', process.stdout, process.stderr]\n})\n```\n\nThe problem: `child` is unkillable on unix.\nExample in coffee-script:\n\n``` coffee\nspawn = require(\"child_process\").spawn\nchild = spawn \"sh\", [\"-c\", \"node -e 'setTimeout(function(){},10000);'\"]\nchild.on \"close\", process.exit\nchild.kill()\nchild.kill(\"SIGINT\")\nchild.kill(\"SIGTERM\")\nchild.kill(\"SIGHUP\")\nspawn \"sh\",[\"-c\",\"kill -TERM \"+child.pid]\nspawn \"sh\",[\"-c\",\"kill -INT \"+child.pid]\nspawn \"sh\",[\"-c\",\"kill -HUP \"+child.pid]\n```\n\n(on windows it works fine with sh replaced by cmd)\nEven when I exit the process with `process.exit()`, the child stays alive.\n\nWorkaround I found:\n\n``` coffee\nspawn = require(\"child_process\").spawn\nchild = spawn \"sh\", [\"-c\", \"node -e 'setTimeout(function(){},10000);'\"], detached: true\nchild.on \"close\", process.exit\nspawn \"sh\",[\"-c\",\"kill -INT -\"+child.pid]\n```\n\nKilling by pgid works, by pid works not. Sending ^C from console works also, I assume it uses pgid always.\n","author":{"url":"https://github.com/paulpflug","@type":"Person","name":"paulpflug"},"datePublished":"2015-07-03T10:19:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":20},"url":"https://github.com/2098/node/issues/2098"}