Question

I am facing this issue when concatenating strings Linux shell script

apphome="`cd \`dirname $0\` && pwd && cd - >/dev/null`"
echo "***************** APP Home***************"
echo $apphome
libdir="${apphome}/lib"
echo "**********Lib  DIR ***********************"
echo ${libdir}

echo $apphome and echo $libdir gives following output

***************** APP Home***************
/product/abc/project1/cba/STADATA
**********Lib  DIR ***********************
/libduct/abc/project1/cba/STADATA

why don’t it append /lib to the libdir correctly, could anybody explain me what is going wrong here

Answer 1

Just quote the string

libdir="${apphome}/lib"

Complete script

#!/bin/sh
apphome="`cd \`dirname $0\` && pwd && cd - >/dev/null`"
echo "***************** APP Home***************"
echo $apphome
libdir="${apphome}/lib"
echo "**********Lib  DIR ***********************"
echo ${libdir}

gives

***************** APP Home***************
/product/abc/project1/cba/STADATA
**********Lib  DIR ***********************
/product/abc/project1/cba/STADATA/lib