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Top Forums Shell Programming and Scripting Holding cursor position on one line Post 303026543 by rbatte1 on Thursday 29th of November 2018 07:23:50 AM
Old 11-29-2018
Another way might be to use tput cup row column to set the cursor position on the screen, but you have to know what shape screen you have and it's usually better to clear it before you begin so you know that there is nothing to overwrite.

Yet another an alternate could be to just output a dot or other character without the new-line each time round the loop with printf


How much output would you expect, or iterations round your loop? Are you watching a file grow, for instance?

You could:-
Code:
#!/bin/bash

filename=/path/to/bigfile

[ ! -f $filename ] && touch $filename             # Make sure it exists
while true
do
   printf "\r$filename=$(stat -c %s $filename) bytes"
   sleep 1
done

progress_pid=$!

# Do whatever to generate the large file now, e.g. a tar or wget etc.

kill $watcher_pid
echo ; echo "Watcher process ended."

This will show the file growing until your script carries on and terminates the watcher.



Does any of these help? it really depends on what you eventually want to do. If you can put it in context, we might refine our suggestions.



Kind regards,
Robin
 

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MOVE(7) 							   SQL Commands 							   MOVE(7)

NAME
MOVE - position a cursor on a specified row of a table SYNOPSIS
MOVE [ direction ] [ count ] { IN | FROM } cursor DESCRIPTION
MOVE allows a user to move cursor position a specified number of rows. MOVE works like the FETCH command, but only positions the cursor and does not return rows. Refer to FETCH [fetch(7)] for details on syntax and usage. NOTES MOVE is a PostgreSQL language extension. Refer to FETCH [fetch(7)] for a description of valid arguments. Refer to DECLARE [declare(7)] to define a cursor. Refer to BEGIN [begin(7)], COMMIT [commit(7)], and ROLLBACK [rollback(7)] for further information about transactions. USAGE
Set up and use a cursor: BEGIN WORK; DECLARE liahona CURSOR FOR SELECT * FROM films; -- Skip first 5 rows: MOVE FORWARD 5 IN liahona; MOVE -- Fetch 6th row in the cursor liahona: FETCH 1 IN liahona; FETCH code | title | did | date_prod | kind | len -------+--------+-----+-----------+--------+------- P_303 | 48 Hrs | 103 | 1982-10-22| Action | 01:37 (1 row) -- close the cursor liahona and commit work: CLOSE liahona; COMMIT WORK; COMPATIBILITY
SQL92 There is no SQL92 MOVE statement. Instead, SQL92 allows one to FETCH rows from an absolute cursor position, implicitly moving the cursor to the correct position. SQL - Language Statements 2002-11-22 MOVE(7)
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