Just my notes

Monday, January 30, 2017

show full path of a file

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readlink -f filename gives the full absolute path. but if the file is a symlink, u'll get the final resolved name.
Wednesday, January 13, 2016

remove bash history under Linux

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history -c  history -w 

vim scp, etc

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vimdiff a.sas scp://user@lpwcsmd1//data/b.sas  note that / is used to separate host and path, so there are two slashes above.
Wednesday, January 21, 2015

git instaweb

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`git instweb` can open a local http server for a git repo
Tuesday, November 18, 2014

imapsync all emails to one folder

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use    --regextrans2 "s/.*/folder_on_Bmail\/$&/"
Monday, October 27, 2014

promise in R

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promise in R #define PROMSXP 5 /* promises: [un]evaluated closure arguments */ reference pryr and see  force  in R
Tuesday, September 23, 2014

see the version number of mac on command line

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$ sw_vers ProductName: Mac OS X ProductVersion: 10.9.5 BuildVersion: 13F34
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