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Mario16
Asked: 2022-05-20 22:21:22 +0800 CST 2022-05-20 22:21:22 +0800 CST

How can I fix tput: No value for $TERM and no -T specified error in bash?

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tput: No value for $TERM and no -T specified

I am making a code in bash and it does not execute correctly. I think it may be a bug found in the bashrc file .


    #!/bin/bash

   
    #Variables Globales


    function Unconfirmedtransactions()
    {
       echo '' > ut.tmp 

       while [ "$(cat ut.tmp | wc -l)" == "1" ]; do 
           curl -s "$unconfirmed_transactions" | html2text > ut.tmp
       done 

       hashes=$(cat ut.tmp | grep "Hash" -A 1 | grep -v -E "Hash|\- -|Time")

       echo $hashes

       tput cnorm
    }

    parameter_counter=0; while getopts "e:h:" arg; do
        case $arg in 
            e) exploration_mode=$OPTARG;let parameter_counter+=1;;
            h) helpPanel;;
        esac 
    done

    tput civis

Apparently the variable $TERMhas no value assigned.

bash

1 Answers

  1. Best Answer

    tputit needs a terminal where to display the output, and if you are launching your script, for example, through cron, it is executed as a user rootwithout having a terminal assigned.

    You have some possible solutions:

    1. Assign TERMto the value dumpbefore calling like tputso:

      TERM=dump

    2. Assign TERMto the current value you have shown in the comments:

      TERM=xterm-256color

    3. Pass it the parameter -Tand specify a terminal, such as-T xterm-256color

      tput -T xterm-256color cnorm

    If you're running your script since cronthen you could also put this at the beginning, substituting or <terminal>in your case:dumpxterm-256color

    TERM=<terminal>

* * * * * sh /ruta/a/tuscript.sh

    Although the truth is that it does not seem appropriate to use it tputwithin a script that is not going to be executed in a terminal and perhaps you should check what you are using it for and if it will really fulfill your purpose.

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