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42 lines
1.0 KiB
42 lines
1.0 KiB
#!/bin/bash
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# Clears the entire current line regardless of terminal size.
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# See the magic by running:
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# { sleep 1; clear_this_line ; }&
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clear_this_line(){
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printf '\r'
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cols="$(tput cols)"
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for i in $(seq "$cols"); do
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printf ' '
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done
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printf '\r'
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}
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# Erases the amount of lines specified.
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# Usage: erase_lines [AMOUNT]
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# See the magic by running:
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# { sleep 1; erase_lines 2; }&
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erase_lines(){
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# Default line count to 1.
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test -z "$1" && lines="1" || lines="$1"
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# This is what we use to move the cursor to previous lines.
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UP='\033[1A'
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# Exit if erase count is zero.
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[ "$lines" = 0 ] && return
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# Erase.
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if [ "$lines" = 1 ]; then
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clear_this_line
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else
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lines=$((lines-1))
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clear_this_line
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for i in $(seq "$lines"); do
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printf "$UP"
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clear_this_line
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done
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fi
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}
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erase_lines "$1"
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