Wednesday, September 30, 2015

test post for my tweet

Test
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What I learned today sep 30th 2015


I find out that search and replace for an file using SED editor

sed -i 's#055#007#' /etc/login.defs ; grep UMASK /etc/login.defs

above command replaces 055 value in login.defs to 007,
this may looks like simple, but it is more powerfull stuff

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