postIt » regexp https://lakm.us/postit Post-It sticky notes with PasteBin sense Thu, 02 Jan 2025 01:33:57 +0000 en-US hourly 1 http://wordpress.org/?v=4.0.18 grep omit empty lines: cat | grep -v … https://lakm.us/postit/2012/01/grep-omit-empty-linescat-grep-v/ https://lakm.us/postit/2012/01/grep-omit-empty-linescat-grep-v/#comments Wed, 25 Jan 2012 06:44:07 +0000 http://xp-racy.lan/postit/2012/01/grep-omit-empty-linescat-grep-v/ grep omit empty lines:

cat <something> | grep -v "^$"

I keep forgetting this regexp of “match expression at the star of the line”: the “^”

]]> https://lakm.us/postit/2012/01/grep-omit-empty-linescat-grep-v/feed/ 0 Unix time conversion # EPOCH=129751 … https://lakm.us/postit/2011/02/unix-time-conversion-epoch129751/ https://lakm.us/postit/2011/02/unix-time-conversion-epoch129751/#comments Sat, 12 Feb 2011 13:52:10 +0000 http://xp-racy.lan/postit/?p=125 Unix time conversion

$ EPOCH=1297515579843
$ echo $EPOCH | cut -c1-10
1297515579
 
$ echo $EPOCH | cut -c1-10 | awk '{print strftime("%c",$1)}'
Sat 12 Feb 2011 07:59:39 PM WIT
]]> https://lakm.us/postit/2011/02/unix-time-conversion-epoch129751/feed/ 0