Potpourri of handy shell one-liners/gems/nuggets for really specific tasks

one-liners.sh

# just keep running count of seconds gone by, printing to console periodicially.
# Useful as rough "stopwatch" when you need to prove to your netadmin that your ssh sessions are getting disconnected regularly.
BEGIN=$(date "+%Y%m%d%H%M%S") ; while [ 1=1 ] ; do echo "$(( $(date '+%Y%m%d%H%M%S') - $BEGIN ))" ; sleep 300 ; done

# Quick and dirty terminal-based test of (HTTPS) SSL connectivity and get the cert expiry properties
echo | openssl s_client -showcerts -connect foohost.bardomain.tld:443 | openssl x509 -noout -dates

## Thought: what belongs in here versus .profile as an alias/function? 
## Probably anything that you aren't going to call often enough to warrant spending neurons on memroizing even the alias/func name.
## in which case most of what follows should actually go elsewhere.

# quick and dirty backup-this-file-right-here-right-now. prime use case: right before you modify any config files in /etc/*
function bup() { cp -pv $1 $1.$(date +%Y%m%d) ; ls -lFth $1* ; }

alias urldecodepipe='sed "s@+@ @g;s@%@\\\\x@g" | xargs -0 printf "%b"'
function urldecode() { : "${*//+/ }"; echo -e "${_//%/\\x}" ; }
function catalina_api_uri_watch () { watch '( grep "\-api" $( ls -rt /var/log/tomcat/*access* | tail -3 ) ; echo -e "\n" ) | cut -f 4,7 -d " " | tail -25 | sed "s@+@ @g;s@%@\\\\x@g" | xargs -0 printf "%b"' ; }

# Specifically for automated signing actions, on a secure host, and requires env var AUTOMATION_GPG_USERID
alias gpg_sign_file="cat $HOME/.gnupg/private-keys-v1.d/${SECDOMAIN_FILENAME_TAG}.secret.pgp.passphrase | gpg2 --passphrase-fd 0 --batch --local-user \$AUTOMATION_GPG_USERID --armor --sign "
# Extract the short Key ID from a public key file, *without* importing to keyring.
gpg2 --dry-run --import foo.public.pgp.asc 2>&1  | sed 's/[   ]\{1,\}/ /g' | grep 'gpg: *key' | cut -f3 -d' ' | sed 's/:$//'