R, installs packagestringe , Error in install packagestringr could not find function install packag

demo@ubuntu:~/SelfStudy/R$ sudo -i R
　　
R version 3.4.4 (2018-03-15) — “Someone to Lean On”
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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Type ‘contributors()’ for more information and
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install.package(“stringr”)
Error in install.package(“stringr”) :
could not find function “install.package”
install.packages(“stringr”)
Installing package into ‘/usr/local/lib/R/site-library’
(as ‘lib’ is unspecified)
also installing the dependencies ‘glue’, ‘magrittr’, ‘stringi’

–skip–

* installing *source* package ‘glue’ …
** package ‘glue’ successfully unpacked and MD5 sums checked
** libs
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c glue.c -o glue.o

–skip–

yes
checking programmatically if U_CHARSET_IS_UTF8 is defined and set… no
checking for available ICU data library (ucnv, uloc, utrans)… yes
checking for available ICU data library (ucol)… yes
configure: creating ./config.status
config.status: creating src/Makevars
config.status: creating src/uconfig_local.h
config.status: creating src/install.libs.R

*** stringi configure summary:
ICU_FOUND=1
STRINGI_CXXSTD=CXX_STD=CXX11
STRINGI_CFLAGS= -fpic
STRINGI_CPPFLAGS=-I. -UDEBUG -DNDEBUG -DU_HAVE_ELF_H
STRINGI_CXXFLAGS= -fpic
STRINGI_LDFLAGS=-L/usr/lib/x86_64-linux-gnu
STRINGI_LIBS=-licui18n -licuuc -licudata

*** compiler settings used:
CC=gcc -std=gnu99
LD=g++
CFLAGS=-g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -fpic
CPPFLAGS= -UDEBUG -DNDEBUG
CXX=g++ -std=gnu++11
CXXFLAGS=-g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -fpic
LDFLAGS=
LIBS=

** libs
g++ -std=gnu++11 -I/usr/share/R/include -DNDEBUG -I. -UDEBUG -DNDEBUG -DU_HAVE_ELF_H -fpic -fpic -g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c stri_brkiter.cpp -o stri_brkiter.o
–skip–
stri_search_regex_subset.o stri_sort.o stri_stats.o stri_stringi.o stri_sub.o stri_test.o stri_time_zone.o stri_time_calendar.o stri_time_symbols.o stri_time_format.o stri_trans_casemap.o stri_trans_other.o stri_trans_normalization.o stri_trans_transliterate.o stri_ucnv.o stri_uloc.o stri_utils.o stri_wrap.o -L/usr/lib/x86_64-linux-gnu -licui18n -licuuc -licudata -L/usr/lib/R/lib -lR
installing via ‘install.libs.R’ to /usr/local/lib/R/site-library/stringi
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (stringi)
* installing *source* package ‘stringr’ …
** package ‘stringr’ successfully unpacked and MD5 sums checked
** R
** data
*** moving datasets to lazyload DB
** inst
** preparing package for lazy loading
** help
*** installing help indices
*** copying figures
** building package indices
** installing vignettes
** testing if installed package can be loaded
* DONE (stringr)

The downloaded source packages are in
‘/tmp/RtmpqzyGxa/downloaded_packages’

source

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