How to Get Curl to Not Show the Progress Bar

How do I get cURL to not show the progress bar?

curl -s http://google.com > temp.html

works for curl version 7.19.5 on Ubuntu 9.10 (no progress bar). But if for some reason that does not work on your platform, you could always redirect stderr to /dev/null:

curl  http://google.com 2>/dev/null > temp.html

Curl with pipe : How to print the error without the progress-meter?

The flag you are looking for is -sS. From man curl:

   -s, --silent
          Silent  or  quiet  mode.  Don't  show progress meter or error messages.  Makes Curl mute. It will still output the data you ask for, potentially even to the terminal/stdout
          unless you redirect it.

          Use -S, --show-error in addition to this option to disable progress meter but still show error messages.

          See also -v, --verbose and --stderr.

Show progress bar in curl without showing response content

The progress bar is sent to stderr. The response is sent to stdout. To redirect and append the response to a file you could use the >> operator:

while read -r i; do
    file="scripts/output.txt"
    curl --location --request GET $i -H 'Authorization: ...' >> $file
    sleep 5
done < scripts/urls.txt

cURL: How to display progress information while uploading?

This is what I use in one of my build scripts:

curl "${UPLOAD_URL}" \
    --progress-bar \
    --verbose \
    -F build="${BUILD}" \
    -F version="${VERSION}" \
    -F ipa="@${IPA};type=application/octet-stream" \
    -F assets="@-;type=text/xml" \
    -F replace="${REPLACE}" \
    -A "${CURL_FAKE_USER_AGENT}" \
    <<< "${ASSETS}" \
    | tee -a "${LOG_FILE}" ; test ${PIPESTATUS[0]} -eq 0

The -F and -A options will probably not be of interest to you, but the helpful parts are:

curl "${UPLOAD_URL}" --progress-bar

which tells curl to show a progress bar (instead of the default 'progress meter') during the upload, and:

 | tee -a "${LOG_FILE}" ; test ${PIPESTATUS[0]} -eq 0

which appends the output of the command to a log file and also echo's it to stdout. The test ${PIPESTATUS[0]} -eq 0 part makes it so that the exit status of this line (which is in a bash script) is the same exit code that the curl command returned and not the exit status of the tee command (necessary because tee is actually the last command being executed in this line, not curl).

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From man curl:

PROGRESS METER
       curl normally displays a progress meter during operations, indicating the
       amount of transferred data, transfer speeds and estimated time left, etc.

       curl  displays  this  data to the terminal by default, so if you invoke curl
       to do an operation and it is about to write data to the terminal, it disables
       the progress meter as otherwise it would mess up the output mixing progress
       meter and response data.

       If you want a progress meter for HTTP POST or PUT requests, you need to
       redirect the response output to a file, using shell redirect (>), -o [file]
       or similar.

       It is not the same case for FTP upload as that operation does not spit out
       any response data to the terminal.

       If you prefer a progress "bar" instead of the regular meter, -# is your
       friend.

OPTIONS
       -#, --progress-bar
              Make curl display progress as a simple progress bar instead of the
              standard, more informational, meter.

How Can I Make Bash Script Using Curl Show Progress Bar

You must make sure to redirect the output to a file instead of stdout. For example with -o or -O.

This is because if you don't, curl expects that there might be output sent to the terminal instead and shuts off the progress meter so that the output won't get mixed with the progress meter display on the screen and everything will be all garbled.

When you do a HTTP transfer (even upload), there's an expectation that there will or might be a response body returned as well.

How to configure curl to only show percentage?

Two modifiers might help, although neither are exact: --silent will suppress all updates and --progress-bar will show a progress bar only.

Edit: One option to make things easier would be to make a wrapper using Expect to simplify the output to your shell script or whatever is listening to curl.

Decrease the frequency of curl progress updates

No there isn't any such option to curl.

curl will update the progress meter at least once every second but when there's data being transferred it might do it (much) more frequently.

I've added the idea in the curl TODO document!

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