Example Zsh/Bash function for transfer.sh homepage (#478)
* correct typo * adapt title * update function, correct typo, adapt sample output * adapt subheading * improve readability, reuse variables, save delete token as separate variable * improve readability * put function into expandable detail section Co-authored-by: Stefan Benten <mail@stefan-benten.de>
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Ramon Fischer
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README.md
157
README.md
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@ -237,26 +237,157 @@ $ transfer hello.txt
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```
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### Zsh (with delete url outpu)
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##### Add this to .zshrc or its equivalent
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### Bash and zsh (with delete url, delete token output and prompt before uploading)
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##### Add this to .bashrc or .zshrc or its equivalent
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<details><summary>Expand</summary><p>
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```bash
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transfer()
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{
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local file="${1}"
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local filename="${file##*/}"
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# show delete link from the response header after upload. the command "sed" is necessary to clean up the output, "gsub()" in "awk" does not work.
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curl --request PUT --progress-bar --dump-header - --upload-file "${file}" "https://transfer.sh/${filename}" | sed "s/#//g" | awk '/x-url-delete/ { print "Delete command: curl --request DELETE " $2 } END{ print "Download link: " $1 }'
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local file
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declare -a file_array
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file_array=("${@}")
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if [[ "${file_array[@]}" == "" || "${1}" == "--help" || "${1}" == "-h" ]]
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then
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echo "${0} - Upload arbitrary files to \"transfer.sh\"."
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echo ""
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echo "Usage: ${0} [options] [<file>]..."
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echo ""
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echo "OPTIONS:"
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echo " -h, --help"
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echo " show this message"
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echo ""
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echo "EXAMPLES:"
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echo " Upload a single file from the current working directory:"
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echo " ${0} \"image.img\""
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echo ""
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echo " Upload multiple files from the current working directory:"
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echo " ${0} \"image.img\" \"image2.img\""
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echo ""
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echo " Upload a file from a different directory:"
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echo " ${0} \"/tmp/some_file\""
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echo ""
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echo " Upload all files from the current working directory. Be aware of the webserver's rate limiting!:"
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echo " ${0} *"
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echo ""
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echo " Upload a single file from the current working directory and filter out the delete token and download link:"
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echo " ${0} \"image.img\" | awk --field-separator=\": \" '/Delete token:/ { print \$2 } /Download link:/ { print \$2 }'"
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echo ""
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echo " Show help text from \"transfer.sh\":"
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echo " curl --request GET \"https://transfer.sh\""
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return 0
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else
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for file in "${file_array[@]}"
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do
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if [[ ! -f "${file}" ]]
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then
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echo -e "\e[01;31m'${file}' could not be found or is not a file.\e[0m" >&2
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return 1
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fi
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done
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unset file
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fi
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local upload_files
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local curl_output
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local awk_output
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local filename
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du --total --block-size="K" --dereference "${file_array[@]}" >&2
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# be compatible with "bash"
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if [[ "${ZSH_NAME}" == "zsh" ]]
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then
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read $'upload_files?\e[01;31mDo you really want to upload the above files ('"${#file_array[@]}"$') to "transfer.sh"? (Y/n): \e[0m'
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elif [[ "${BASH}" == *"bash"* ]]
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then
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read -p $'\e[01;31mDo you really want to upload the above files ('"${#file_array[@]}"$') to "transfer.sh"? (Y/n): \e[0m' upload_files
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fi
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case "${upload_files:-y}" in
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"y"|"Y")
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# for the sake of the progress bar, execute "curl" for each file.
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# the parameters "--include" and "--form" will suppress the progress bar.
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for file in "${file_array[@]}"
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do
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filename="${file##*/}"
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# show delete link and filter out the delete token from the response header after upload.
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# it is important to save "curl's" "stdout" via a subshell to a variable or redirect it to another command,
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# which just redirects to "stdout" in order to have a sane output afterwards.
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# the progress bar is redirected to "stderr" and is only displayed,
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# if "stdout" is redirected to something; e.g. ">/dev/null", "tee /dev/null" or "| <some_command>".
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# the response header is redirected to "stdout", so redirecting "stdout" to "/dev/null" does not make any sense.
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# redirecting "curl's" "stderr" to "stdout" ("2>&1") will suppress the progress bar.
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curl_output=$(curl --request PUT --progress-bar --dump-header - --upload-file "${file}" "https://transfer.sh/${filename}")
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awk_output=$(awk \
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'gsub("\r", "", $0) && tolower($1) ~ /x-url-delete/ \
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{
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delete_link=$2;
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print "Delete command: curl --request DELETE " "\""delete_link"\"";
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gsub(".*/", "", delete_link);
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delete_token=delete_link;
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print "Delete token: " delete_token;
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}
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END{
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print "Download link: " $0;
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}' <<< "${curl_output}")
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# return the results via "stdout", "awk" does not do this for some reason.
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echo -e "${awk_output}\n"
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# avoid rate limiting as much as possible; nginx: too many requests.
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if (( ${#file_array[@]} > 4 ))
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then
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sleep 5
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fi
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done
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;;
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"n"|"N")
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return 1
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;;
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*)
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echo -e "\e[01;31mWrong input: '${upload_files}'.\e[0m" >&2
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return 1
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esac
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}
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```
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#### Sample ouput
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```bash
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$ transfer image.img
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######################################################################################################################################################################################################################################## 100.0%
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Delete command: curl --request DELETE https://transfer.sh/Ge9cuW/image.img/<some_delete_token>
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Download link: https://transfer.sh/Ge9cuW/image.img
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```
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</p></details>
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#### Sample output
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```bash
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$ ls -lh
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total 20M
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-rw-r--r-- 1 <some_username> <some_username> 10M Apr 4 21:08 image.img
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-rw-r--r-- 1 <some_username> <some_username> 10M Apr 4 21:08 image2.img
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$ transfer image*
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10240K image2.img
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10240K image.img
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20480K total
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Do you really want to upload the above files (2) to "transfer.sh"? (Y/n):
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######################################################################################################################################################################################################################################## 100.0%
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Delete command: curl --request DELETE "https://transfer.sh/wJw9pz/image2.img/mSctGx7pYCId"
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Delete token: mSctGx7pYCId
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Download link: https://transfer.sh/wJw9pz/image2.img
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######################################################################################################################################################################################################################################## 100.0%
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Delete command: curl --request DELETE "https://transfer.sh/ljJc5I/image.img/nw7qaoiKUwCU"
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Delete token: nw7qaoiKUwCU
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Download link: https://transfer.sh/ljJc5I/image.img
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$ transfer "image.img" | awk --field-separator=": " '/Delete token:/ { print $2 } /Download link:/ { print $2 }'
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10240K image.img
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10240K total
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Do you really want to upload the above files (1) to "transfer.sh"? (Y/n):
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######################################################################################################################################################################################################################################## 100.0%
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tauN5dE3fWJe
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https://transfer.sh/MYkuqn/image.img
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```
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## Contributions
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