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solo9300

09-29-2009 03:50 AM

SHELL SCRIPT Write at the right of the shell window

Hello all,

Is there an easy way to write at the right of a shell window in shell script ? For example:

My service [at the left]: OK [at the right]

Any help would be much appreciated.

slakmagik

09-29-2009 04:17 AM

Probably an easy obvious way but all that springs to mind is:

Code:

string="My service:"

printf "%s%$((${COLUMNS}-${#string}))s" "$string" "OK"

-- Oh, come to think of it, I'm not sure if you count on COLUMNS being available. If not,

Code:

printf "%s%$(($(stty size | cut -d' ' -f2)-${#string}))s" "$string" "OK"

should do the same.

lumak

09-29-2009 10:53 AM

Thank you slakmagik! I wanted to use the number of rows in a script once but $LINES isn't available inside scripts. Much help indeed.

That fixes that.

Code:

#!/bin/env /bin/sh

TTY_LINES=$(stty size | cut -d' ' -f1)

let " LINES = TTY_LINES - 4"

watch "dmesg | tail --lines=$LINES"

slakmagik

09-29-2009 04:56 PM

Glad it helped you both. :)

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