until [ -f /tmp/examplefile.txt ] do sleep 5 done echo "File found" exit Every 5 seconds it will wake up and look for the file. 1. When multiple processes are running in the shell then only the process id of the last command will be known by the current shell. lsof - List open files. If the file is not already being watched a new task is started which repeatedly checks the file to see if it can be opened. This release fixes several outstanding bugs in bash-5.0 and introduces several new features. The second leg leads me to my run command, then the third should be the leg that picks up the resulting data. 129 1 1 silver badge 8 8 bronze badges. Syntaxcy.wait(time) cy.wait(alias) cy.wait(aliases) cy.wait(time, options) cy.wait(al Run it. i need the main script to wait until those commands are finished , and the problem is that the main script is not waiting . There are 3 basic loop constructs in Bash scripting, for loop, while loop, and until loop. As we already … The return status is the exit status of the last command executed in the CONSEQUENT-COMMANDS list, or zero if none was executed. In this article I'm going to show you a few different ways to wait. You may need to wait until another thread finishes, or maybe until a new file appears in a directory on disk that is being watched. I guess this is a philosophical question -- should we attempt to make things portable if possible or should we just assume that all the world's running windows/linux and act accordingly? REM If no delay is needed, comment/remove the timeout line. I have it all working nicely, except I can't get it to wait for the run command to finish. A Do..While loop continues as long as the condition is TRUE. You will see that notepad opens first. share | improve this question | follow | edited Sep 25 '19 at 11:17. TIMEOUT /T 60 >nul GOTO CheckForFile :FoundIt ECHO Found: %LookForFile% Here is a long column with data which is including some empty cells, and you want to loop through the rows until meeting blank cell. In these and many other situations you will need to figure out a way to make your script wait, and this isn't as easy as it sounds if you want to do it properly! declare. A few points to note: = is slightly different to -eq. This is a Loop , but if the 2 commands are execute correclty , 1 time how i can continue to done ??? bash while loop for 5 minutes (define sleep duration 1 minute) Here we have kept our Linux sleep script timer as 1 minute so the date command will run every minute until 5 minute completes. 3. In Ansible 1.6 and later, this module can also be used to wait for a file to be available or absent on the filesystem. A Do..Until loop continues as long as the condition is FALSE. TEST-COMMAND can, again, be any command that can exit with a success or failure status, and CONSEQUENT-COMMANDS can be any UNIX command, script or shell construct. Bash until Loop # The until loop is used to execute a given set of commands as long as the given condition evaluates to false. when the loop has run once the condition is evaluated again command_block Commands, separated by commas, to run each time the loop repeats. $ wait 2585 “If you wait to do everything until you're sure it's right, you'll probably never do much of anything” ~ Win Borden. I need to make a command in background "command1 &" and then somewhere in the script I need to wait for... Stack Exchange Network Stack Exchange network consists of 176 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The inotify-tools package no jobs to wait until Space is pressed the resulting data time how I can some! 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