# on receiving block  here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-06-23T04:54:47Z
# as written in the block header


$ uptime   # since last reboot
 04:54:46 up 140 days, 16:34,  0 users,  load average: 2.57, 2.02, 1.80

$ battery.sh
127%, Power Supply Online

$ uname -smnr
Linux singer 6.6.37-0-lts x86_64

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    2105740 kB

$ du -h -d1 .bitcoin/signet
213M	.bitcoin/signet/indexes
9.3M	.bitcoin/signet/wallets
482M	.bitcoin/signet/blocks
1.9G	.bitcoin/signet/chainstate
2.6G	.bitcoin/signet

$ df -h .
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       912G  838G   74G  92% /

$ bitcoind -version
Bitcoin Core daemon version v29.99.0-5f9c5597106e
Copyright (C) 2009-2025 The Bitcoin Core developers

Please contribute if you find Bitcoin Core useful. Visit
<https://bitcoincore.org/> for further information about the software.
The source code is available from <https://github.com/bitcoin/bitcoin>.

This is experimental software.
Distributed under the MIT software license, see the accompanying file COPYING
or <https://opensource.org/license/MIT>

$ BC=$(bitcoin-cli -signet getblockcount); echo $BC


$ BH=$(bitcoin-cli -signet getblockhash ); echo $BH


$ bitcoin-cli -signet getblockheader


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
   

$ : Following was the shortform
$ : from which shortkode came
$ last=${BH: -4}
$ a=$(echo $BH | cut -b-60 \
  | fold -w 4 \
  | grep -Ev '^(0000|[^0]{4})$')
$ R=$(echo $a $last | cut -b-20)
$ printf "%s sf: " $BC
$ { echo $R | grep "$last$" \
  || echo $R M; } | tr "0\n" ". "
  echo
 sf:  

$ : Following was the shortkode
$ : from which anecdote came
$ nz=$(echo $BH | fold -w 4 \
  | grep -cE '^[^0]{4}$')
$ z=$(echo $BH | fold -w 4 \
  | grep -c '^0000$')
$ nzzs=$(((${nz}<<4)+${z}))
$ printf "%s sk: " $BC
$ printf "%s %x\n" \
    $last \
    $nzzs \
    | tr 0 .
 sk: . .

$ : Following is an anecdote
$ all=$(echo $BH | fold -w 4 \
    | sed 's/^/0x/' \
    | paste -s | tr '\t' ^)
$ printf "%s ak: " $BC
$ printf "%04x %02x\n" \
    $(($all)) $nzzs \
    | tr 0 .
 ak: 
### niceblack moved to the end

$ bitcoin-cli -signet getmempoolinfo
{
  "loaded": true,
  "size": 5723,
  "bytes": 2296218,
  "usage": 12859696,
  "total_fee": 0.13199730,
  "maxmempool": 100000000,
  "mempoolminfee": 0.00001000,
  "minrelaytxfee": 0.00001000,
  "incrementalrelayfee": 0.00001000,
  "unbroadcastcount": 0,
  "fullrbf": true
}

$ gmm.sh
3969