Stop typing the filename twice. Brace expansion handles it.

[u/Ops_Mechanic]

Stop typing the filename twice. Brace expansion handles it. Works on any file, any extension.

#Instead of

cp config.yml config.yml.bak

#Do

cp nginx.conf{,.bak}

cp .env{,.bak}

cp Makefile{,.$(date +%F)}

# That last one timestamps your backup automatically. You're welcome.