apache2 commandline 1

commandline session $ 4.2.29 34 534—> sudo /usr/sbin/apache2 -D module [sudo] password for jeffrin: apache2: bad user name ${APACHE_RUN_USER} $ 4.2.29 35 535—> sudo /usr/sbin/apache2 -D loadmodule apache2: bad user name ${APACHE_RUN_USER} $ 4.2.29 36 536—> sudo /usr/sbin/apache2 -l Compiled in modules: core.c mod_log_config.c mod_logio.c mod_version.c prefork.c http_core.c mod_so.c $ 4.2.29 37 537—>

R – reading tabular data files

commandline session > dfrm print(dfrm dfrm > print(dfrm) V1 V2 1 Name Jeffrin 2 Age 35 3 Sex Male > dfrm print(dfrm) V1 1 Name-Jeffrin 2 Age-35 3 Sex-Male > dfrm print(dfrm) V1 1 Name-Jeffrin 2 Age-35 3 Sex-Male > class(dfrm$V1) [1] “factor” > class(dfrm$V1) [1] “factor” > class(dfrm$V2) [1] “NULL” > class(dfrm$V3) [1] “NULL” …

R – package installation

Get The Hang > install.packages(c(“Rpad”)) Installing package(s) into ‘/usr/local/lib/R/site-library’ (as ‘lib’ is unspecified) — Please select a CRAN mirror for use in this session — Loading Tcl/Tk interface … done trying URL ‘http://ftp.iitm.ac.in/cran/src/contrib/Rpad_1.3.0.tar.gz’ Content type ‘application/x-gzip’ length 1745840 bytes (1.7 Mb) opened URL ================================================== downloaded 1.7 Mb * installing *source* package ‘Rpad’ … ** package …

R – reading tabular files

commandline session > test print(test) V1 V2 1 Name Jeffrin 2 Age 35 3 Sex Male > version _ platform x86_64-pc-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major 2 minor 15.1 year 2012 month 06 day 22 svn rev 59600 language R version.string R version 2.15.1 (2012-06-22) nickname Roasted Marshmallows > Save workspace …

R – loading libraries and data related

Get The Hang > library(ggplot2) Error in library(ggplot2) : there is no package called ‘ggplot2’ > library(ggplot2) Loading required package: reshape Loading required package: plyr Attaching package: ‘reshape’ The following object(s) are masked from ‘package:plyr’: rename, round_any Loading required package: grid Loading required package: proto >

sed – stream editor for filtering and transforming text

commandline session $ 4.2.20 36 535—> cat tiles.txt 1. width 2 meters and 15 centimeters height 1 meters and 50 centimeters area = 2.15 * 1.50 = 3.225 square meter 2. width 2 meters and 15 centimeters height 43 centimeters area = .9245 square meter Sum = 4.1495 square meter. 1 tile = .1350 square …