feh | a fast and light image viewer | Command Line Interface library

Neither of the processes in your Procfile is specified correctly.

• The web command's --pythonpath should just be backend and it should receive the dotted path feh.wsgi as an argument:

Unless you modified your bash with a built-in sleep, you can kill the sleep command. The script will then proceed to the next command as if sleep terminated normally. The only tricky part is to identify the correct process to kill. Here I assume that there is only one randomwallpaper process running on your system:

RE.REPLACE -- Try this function.. anything between the parenthesis will be replaced with "" giving you string of model names only, which you can then split on comma and get string array if so desired.

Your src attribute for the img tag will be something like this

Once & is encountered, the first command (feh "image.jpg") is sent to the background, then separately the shell executes >/dev/null 2>&1, which executed alone like this does nothing. You need to set up the output pipes/redirection before sending the process to background:

feh "image.jpg" > /dev/null 2>&1 & echo "Second command"

Note that > /dev/null is the same as 1> /dev/null which means you can do >/dev/null 2>/dev/null or 1>/dev/null 2>/dev/null to get the same effect.

For the job termination output, you can wrap your command in parenthesis like this:

(feh "image.jpg" > /dev/null 2>&1 & echo "Second command" )

As mentioned in the linked post, be aware that this will make you lose control of the process that you send to back with &.

Have a look at:

Pretty-print an entire Pandas Series / DataFrame

Pandas doesn't print long lines and cuts of the line after some symbols. Most of the time, this is not a problem, except you have entries with huge sizes.

When starting the three windows, use xterm's -class option to modify the WM_CLASS property it attaches to its window, choosing a different and unique class for each of the three. Then you can select for that class in your manage hook to only match the right window.

if you look closely at your values (truncated below!), you'll see that the very last single quote is actually a "right single quotation mark" (U+2019) and not a "single quote" / "apostrophe" (U+0027), while all other quotes are apostrophe, as they should be.

Create a variable called delay. After calling set_clock, use date +%N to get the current nanoseconds. Set delay to 1 minus the current nanoseconds, and change your loop to say while sleep $delay instead of while sleep 1.

That way, your loop will only sleep until the top of the next second.

This will only fix the problem if the construction and display of the image always take less than a second. If the system is very busy and your process requires more than a second to complete, it'll still skip a second.