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How do I monitor a shell script?
Shell tracing simply means tracing the execution of the commands in a shell script. To switch on shell tracing, use the -x debugging option. This directs the shell to display all commands and their arguments on the terminal as they are executed.
Which shell command would you see if you wanted to display each command before they are actually executed?
Run any shell script line by line: Show command before execution and wait for confirmation.
- Print the next command before it’s executed (similar to set -o xtrace or bash -x)
- Wait for user input or confirmation (read) before executing the next command.
How to check if program is running with Bash shell script?
This is an example of a bash script which checks for some running process (daemon or service) and does specific actions (reload, sends mail) if there is no such process running. However, it doesn’t work. I got “ERROR: Garbage option.”
How to check if a process is running?
Note this answer is orientated toward a self checking script, for manually checking if a process is running before attempting to run it from the command line, see slm’s answer. The easiest way is to use pgrep if it is available: If not, you can use a combination of ps and grep:
How to check if a process is running via a batch script?
INFO: No tasks are running which match the specified criteria. which is then read as the process is running. I don’t have a heap of batch scripting experience, so my soulution is to then search for the process name in the search.log file and pump the results into another file and search that for any output. I hope this helps someone else.
Is there a way to check if a script is running?
Caveat: path matching will only work if the script was invoked with a path – this is generally true for scripts in the $PATH that are invoked directly. Even this function cannot rule out all false positives, as paths can have embedded spaces, yet neither ps nor pgrep reflect the original quoting applied to the command line.