Adds default cmd='bash' to execShellScript

Author: nikita-skobov

server/src/util/sh.ts

@@ -3,9 +3,9 @@ import * as ChildProcess from 'child_process'
 /**
  * Execute the following sh program.
  */
-export function execShellScript(body: string): Promise<string> {
+export function execShellScript(body: string, cmd = 'bash'): Promise<string> {
   const args = ['-c', body]
-  const process = ChildProcess.spawn('bash', args)
+  const process = ChildProcess.spawn(cmd, args)
 
   return new Promise((resolve, reject) => {
     let output = ''