Watch progress of sync operations and quit it with q

[jagsdesai]

I like to combine these 2 commands in order to watch progress of sync command and then quit it with 'q'.

watch-n1 'grep -E "(Dirty|Write)" /proc/meminfo; echo; ls /sys/block/ | while read device; do awk "{ print \"$device: \"  \$9 }" "/sys/block/$device/stat"; done';

Source: https://unix.stackexchange.com/a/713647/366010

and quit it qith q by either:

2>&1|less

or

|& less

Source: https://askubuntu.com/a/1415867/928088

So I've created a fucntion:

nano ~/.bashrc

and added:

function ws() {
    ( watch -n1 'grep -E "(Dirty|Write)" /proc/meminfo; echo; ls /sys/block/ | while read device; do awk "{ print \"$device: \"\$9 }" "/sys/block/$device/stat"; done'; )
}

export -f ws

So, with 'ws' I get:



Now if I add:

2>&1 | less;

to combine both and make it:

function ws() {
    ( watch -n1 'grep -E "(Dirty|Write)" /proc/meminfo; echo; ls /sys/block/ | while read device; do awk "{ print \"$device: \"\$9 }" "/sys/block/$device/stat"; done'; ) 2>&1 | less;
}

I get this jumbled output:



So how to combine these 2 commands? Many thanks in advance.

[sudodus]

I suggest that you make a bash shellscript and use the bash version of read that is activated by a 'q' in order to kill watch.

#!/bin/bash

watch -n1 'grep -E "(Dirty|Write)" /proc/meminfo;
echo;
ls /sys/block/ | while read device;
do
 awk "{ print \"$device: \"  \$9 }" "/sys/block/$device/stat"
done' & pid=$!

while true
do
 read -sn1 -t2 ans
 if [ "$ans"  == "q" ]
 then
  kill -9 "$pid"
  echo "
quit"
  exit 0
 fi
done

[1fallen]

+1 to sudodus's script

[jagsdesai]

I suggest that you make a bash shellscript and use the bash version of read that is activated by a 'q' in order to kill watch.

It's working perfectly. Many thanks.