Extra space received if text line wraps
Eröffnet am: 2019-06-29 21:06
Letztes Update: 2019-06-29 21:06
Auswertung: | (Anonym) | Verantwortlicher: | (Keine) |
---|---|---|---|
Priorität: | 5 - Mittel | Meilenstein: | (Keine) |
Typ: | Fehler | Schweregrad: | 5 - Mittel |
Komponente: | (Keine) | Status: | Offen |
Lösung | Keine |
Einzelheiten
I have connected to a linux box and I want to run a recursive MD5SUM from a directory that I navigate to.
So I send the following commands:
cd /media/USB_HDD_4/ReadyNAS-A/data/Documents
pwd
find . -type f -exec md5sum '{}' \;
Before sending the #10 to finish the line, I wait for the entire sent cmd to be echoed back:
send cmdline
wait cmdline
send #10
However, the matching of the 3rd line being received failed and I eventually got a connection timeout. I was logging the session and I found that what was perceived as received contained an extra space between the word "exec" and the word "md5sum". I sent 1 space but 2 were recorded in the log:
Tx: find#.#-type#f#-exec#md5sum#'{}'#\;
Rx: find#.#-type#f#-exec##md5sum#'{}'#\;
(I have used "#" to represent spaces due to the way that this portal seems to adjust the formatting of my post - at least in preview mode)
What I then noticed was that my terminal window was 80x24 and the "c" of "exec" was the last character of a line. This caused a wrap on the screen and the next line that appeared normally in teraterm, beginning " md5", was recorded in the log file with an extra space.
To prove the point, I resized the terminal window to be 120x24. When I re-ran the script the stuff I was waiting for no longer wraped to the next line and my wait matched perfectly and the script ran.
I can continue for now... until the time when whatever I am doing happens to wrap this workaround screen width.
Kind regards,
Ian
Letzte Aktualisierung für dieses Ticket
2019-06-29 21:06 Aktualisiert von: None
- New Ticket "Extra space received if text line wraps" created