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tweet.sh, a Twitter client written in simple Bash script

Setup

You need to prepare API keys at first. Go to the front page, create a new app, and generate a new access token.

Then put them as a key file at ~/.tweet.client.key, with the format:

MY_SCREEN_NAME=xxxxxxxxxxxxxxxxxxx
MY_LANGUAGE=xx
CONSUMER_KEY=xxxxxxxxxxxxxxxxxxx
CONSUMER_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
ACCESS_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
ACCESS_TOKEN_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

If there is a key file named tweet.client.key in the current directory, tweet.sh will load it. Otherwise, the file ~/.tweet.client.key will be used as the default key file.

Moreover, you can give those information via environment variables without a key file.

$ export MY_SCREEN_NAME=xxxxxxxxxxxxxxxxxxx
$ export MY_LANGUAGE=xx
$ export CONSUMER_KEY=xxxxxxxxxxxxxxxxxxx
$ export CONSUMER_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
$ export ACCESS_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
$ export ACCESS_TOKEN_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
$ ./tweet.sh post "Hello!"

This form will be useful to implement a bot program.

And, this script uses some external commands. You need to install them via package system on your environment: apt, yum or something. Required commands are:

  • curl
  • jq
  • nkf
  • openssl

Usage

$ ./tweet.sh [command] [...arguments]

Available commands are:

  • help: shows usage of the tweet.sh itself.
  • Reading existing tweets (require "Read" permission)
    • fetch (get, show): fetches a JSON string of a tweet.
    • search: searches tweets with queries.
    • watch-mentions (watch): watches mentions, retweets, DMs, etc., and executes handlers for each event.
    • type: detects the type of the given input.
    • body: extracts the body of a tweet.
    • owner: extracts the owner of a tweet.
    • showme: reports the raw information of yourself.
    • whoami: reports the screen name of yourself.
    • language (lang): reports the selected language of yourself.
  • Making some changes (require "Write" permission)
    • post (tweet, tw): posts a new tweet.
    • reply: replies to an existing tweet.
    • upload: uploads a media file.
    • delete (del, remove, rm): deletes a tweet.
    • favorite (fav): marks a tweet as a favorite.
    • unfavorite (unfav): removes favorited flag of a tweet.
    • retweet (rt): retweets a tweet.
    • unretweet (unrt): deletes the retweet of a tweet.
    • follow: follows a user.
    • unfollow: unfollows a user.
  • Operate direct messages (require "Access direct messages" permission)
    • fetch-direct-messages (fetch-dm, get-direct-messages, get-dm): fetches recent DMs.
    • direct-message (dm): sends a DM.

If you hope to handle DMs by the watch-mentions command, you have to permit the app to access direct messages.

Detailed logs can be shown with the DEBUG flag, like:

$ env DEBUG=1 ./tweet.sh search -q "Bash"

This script is mainly designed to be a client library to implement Twitter bot program, instead for daily human use. For most cases this script reports response JSONs of Twitter's APIs via the standard output. See descriptions of each JSON: a tweet, an event, and other responses also.

Some commands require URL of a tweet, and they accept shortened URLs like http://t.co/***. Such URLs are automatically resolved as actual URLs like https://twitter.com/***/status/***. The detectipn pattern for such shortened URLs is defined as URL_REDIRECTORS in the script, and it must be updated for new services.

Reading existing tweets

fetch (get, show): fetches a JSON string of a tweet

  • Parameters

    • 1st argument: the ID or the URL of the tweet.
  • Standard output

  • Example

    $ ./tweet.sh fetch 0123456789
    $ ./tweet.sh fetch https://twitter.com/username/status/0123456789
    $ ./tweet.sh get 0123456789
    $ ./tweet.sh show 0123456789
    

search: searches tweets with queries.

  • Parameters

    • -q: queries.
    • -c: maximum number of tweets to be responded. 10 by default. (optional)
    • -s: the id of the last tweet already known. (optional) If you specify this option, only tweets newer than the given tweet will be returned.
    • -h: command line to run for each search result. (optional) (It will receive tweets via the standard input.)
    • -w: start watching without handler. (optional)
  • Standard output

  • Example

    $ ./tweet.sh search -q "queries" -c 10
    $ ./tweet.sh search -q "Bash OR Shell Script"
    $ ./tweet.sh search -q "Bash OR Shell Script" -h 'echo "found!"; cat'
    $ ./tweet.sh search -q "Bash OR Shell Script" -w |
        while read -r tweet; do echo "found!: ${tweet}"; done
    

Streaming

Basically this command provides ability to get search result based on the given query.

If you hope to observe new tweets matched to the query continuously, specify a callback command line as the handler via the -h option.

$ ./tweet.sh search -q "queries" -h "echo 'FOUND'; cat"

In this case, only -q and -h options are available. The script doesn't exit automatically if you specify the -h option. To stop the process, you need to send the SIGINT signal via Ctrl-C or something.

Important note: you cannot use this feature together with watch-mentions command. Only one streaming API is allowed for you at once. If you hope to watch search results with mentions, use the -k and -s options of the watch-mentions command.

watch-mentions (watch): watches mentions, retweets, DMs, etc., and executes handlers for each event.

  • Parameters

    • -k: comma-separated list of tracking keywords.
    • -m: command line to run for each reply or mention. (optional) (It will receive mention tweets via the standard input.)
    • -r: command line to run for each retweet. (optional) (It will receive retweet tweets via the standard input.)
    • -q: command line to run for each quotation. (optional) (It will receive quotation tweets via the standard input.)
    • -f: command line to run when a user follows you. (optional) (It will receive follow event via the standard input.)
    • -d: command line to run when a DM is received. (optional) (It will receive quotation tweets via the standard input.)
    • -s: command line to run for each search result, matched to the keywords given via the -k option. (optional)
  • Standard output

    • Nothing.
  • Example 1: without handlers

    $ ./tweet.sh watch-mentions -k "keyword1,keyword2,..." |
        while read -r event; do echo "event: ${event}"; done
    
  • Example 2: with handlers

    $ ./tweet.sh watch-mentions -k "keyword1,keyword2,..." \
                                -r "echo 'REPLY'; cat" \
                                -t "echo 'RT'; cat" \
                                -q "echo 'QT'; cat" \
                                -f "echo 'FOLLOWED'; cat" \
                                -d "echo 'DM'; cat" \
                                -s "echo 'SEARCH-RESULT'; cat"
    

This command provides ability to observe various events around you or any keyword.

In this case this script stays running. To stop the process, you need to send the SIGINT signal via Ctrl-C or something.

Important note: you cannot use this feature together with search command with a handler. Only one streaming API is allowed for you at once. If you hope to watch search results with mentions, use the -k and -s options instead of the search command.

type: detects the type of the given input.

  • Parameters

  • Standard output

    • The data type detected from the input. Possible values:
      • event-follow: An event when you are followed.
      • direct-message: A direct message. It can be wrapped with a key direct_message.
      • quotation: A commented RT.
      • retweet: An RT.
      • mention: A mention or reply.
      • search-result: A tweet which is matched to the given keywords.
  • Example

    $ echo "$tweet_json" | ./tweet.sh type -k keyword1,keyword2
    

This command provides ability to detect the type of each object returned from the user stream. For unknown type input, this returns an exit status 1 and reports nothing.

body: extracts the body of a tweet.

  • Parameters

  • Standard output

    • The body string of the tweet.
  • Example

    $ ./tweet.sh body 0123456789
    $ ./tweet.sh body https://twitter.com/username/status/0123456789
    $ echo "$tweet_json" | ./tweet.sh body
    

owner: extracts the owner of a tweet.

  • Parameters

  • Standard output

    • The screen name of the owner.
  • Example

    $ ./tweet.sh owner 0123456789
    $ ./tweet.sh owner https://twitter.com/username/status/0123456789
    $ echo "$tweet_json" | ./tweet.sh owner
    

showme: reports the raw information of yourself.

This will be useful if you hope to get both informations whoami and language at once.

whoami: reports the screen name of yourself.

  • Parameters

    • Nothing.
  • Standard output

    • The screen name of yourself.
  • Example

    $ ./tweet.sh whoami
    username
    

Important note: the rate limit of the API used by this command is very low. If you hope to call another language command together, then you should use showme command instead.

language (lang): reports the selected language of yourself.

  • Parameters

    • Nothing.
  • Standard output

    • The language code selected by yourself.
  • Example

    $ ./tweet.sh language
    en
    $ ./tweet.sh lang
    en
    

Important note: the rate limit of the API used by this command is very low. If you hope to call another whoami command together, then you should use showme command instead.

Making some changes

post (tweet, tw): posts a new tweet.

  • Parameters

    • -m: comma-separated list of uploaded media IDs. See also the upload command.
    • All rest arguments: the body of a new tweet to be posted.
  • Standard output

  • Example

    $ ./tweet.sh post A tweet from command line
    $ ./tweet.sh post 何らかのつぶやき
    $ ./tweet.sh tweet @friend Good morning.
    $ ./tweet.sh tw -m 123,456,789 My Photos!
    

All rest arguments following to the command name are posted as a tweet. If you include a user's screen name manually in the body, it will become a mention (not a reply).

reply: replies to an existing tweet.

  • Parameters

    • -m: comma-separated list of uploaded media IDs. See also the upload command.
    • 1st rest argument: the ID or the URL of a tweet to be replied.
    • All other rest arguments: the body of a new reply to be posted.
  • Standard output

  • Example

    $ ./tweet.sh reply 0123456789 @friend A regular reply
    $ ./tweet.sh reply 0123456789 A silent reply
    $ ./tweet.sh reply https://twitter.com/username/status/0123456789 @friend A regular reply
    $ ./tweet.sh reply https://twitter.com/username/status/0123456789 A silent reply
    $ ./tweet.sh reply 0123456789 -m 123,456,789 Photo reply
    

Note that you have to include the user's screen name manually if it is needed. This command does not append it automatically.

upload: uploads a file.

delete (del, remove, rm): deletes a tweet.

  • Parameters

    • 1st argument: the ID or the URL of a tweet to be deleted.
  • Standard output

  • Example

    $ ./tweet.sh delete 0123456789
    $ ./tweet.sh del https://twitter.com/username/status/0123456789
    $ ./tweet.sh remove 0123456789
    $ ./tweet.sh rm https://twitter.com/username/status/0123456789
    

favorite (fav): marks a tweet as a favorite.

  • Parameters

    • 1st argument: the ID or the URL of a tweet to be favorited.
  • Standard output

  • Example

    $ ./tweet.sh favorite 0123456789
    $ ./tweet.sh favorite https://twitter.com/username/status/0123456789
    $ ./tweet.sh fav 0123456789
    $ ./tweet.sh fav https://twitter.com/username/status/0123456789
    

unfavorite (unfav): removes favorited flag of a tweet.

  • Parameters

    • 1st argument: the ID or the URL of a tweet to be unfavorited.
  • Standard output

  • Example

    $ ./tweet.sh unfavorite 0123456789
    $ ./tweet.sh unfavorite https://twitter.com/username/status/0123456789
    $ ./tweet.sh unfav 0123456789
    $ ./tweet.sh unfav https://twitter.com/username/status/0123456789
    

retweet (rt): retweets a tweet.

  • Parameters

    • 1st argument: the ID or the URL of a tweet to be retweeted.
  • Standard output

  • Example

    $ ./tweet.sh retweet 0123456789
    $ ./tweet.sh retweet https://twitter.com/username/status/0123456789
    $ ./tweet.sh rt 0123456789
    $ ./tweet.sh rt https://twitter.com/username/status/0123456789
    

Note, you cannot add extra comment for the retweet. Instead, if you hope to "quote" the tweet, then you just have to post with the URL of the original tweet.

$ ./tweet.sh post Good news! https://twitter.com/username/status/0123456789

unretweet (unrt): deletes the retweet of a tweet.

  • Parameters

    • 1st argument: the ID or the URL of a tweet to be unretweeted.
  • Standard output

  • Example

    $ ./tweet.sh unretweet 0123456789
    $ ./tweet.sh unretweet https://twitter.com/username/status/0123456789
    $ ./tweet.sh unrt 0123456789
    $ ./tweet.sh unrt https://twitter.com/username/status/0123456789
    

follow: follows a user.

  • Parameters

    • 1st argument: the screen name of a user to be followed.
  • Standard output

  • Example

    $ ./tweet.sh follow @username
    $ ./tweet.sh follow username
    

unfollow: unfollows a user.

  • Parameters

    • 1st argument: the screen name of a user to be unfollowed.
  • Standard output

  • Example

    $ ./tweet.sh unfollow @username
    $ ./tweet.sh unfollow username
    

#Operate direct messages

fetch-direct-messages (fetch-dm, get-direct-messages, get-dm): fetches recent DMs.

  • Parameters

    • -c: maximum number of messages to be fetched. 10 by default.
    • -s: the id of the last message already known. If you specify this option, only messages newer than the given id will be fetched.
  • Standard output

  • Example

    $ ./tweet.sh fetch-direct-messages -c 20
    $ ./tweet.sh fetch-dm -c 10 -s 0123456789
    $ ./tweet.sh get-direct-messages -c 20
    $ ./tweet.sh get-dm -c 10 -s 0123456789
    

direct-message (dm): sends a DM.

  • Parameters

    • All arguments: the body of a new direct message to be sent.
  • Standard output

  • Example

    $ ./tweet.sh direct-message @friend Good morning.
    $ ./tweet.sh direct-message friend Good morning.
    $ ./tweet.sh dm @friend Good morning.
    $ ./tweet.sh dm friend Good morning.
    

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Twitter client written in simple Bash script

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