Question

I am currently converting a csh script on linux to a bash script on Mac OS X lion.

The csh script looks like:

setenv CNS_SOLVE '/Users/ucbthsa/Documents/haddock2.1/software/bin/'
setenv CNS_SOLVE $CNS_SOLVE
if ( -d $CNS_SOLVE ) then
    if ( ! $?CNS_ARCH ) setenv CNS_ARCH `$CNS_SOLVE/bin/getarch`
else
    setenv CNS_ARCH 'unknown'
endif

My conversion to a Mac bash script looks as follows:

export CNS_SOLVE='/Users/ucbthsa/Documents/haddock2.1/software/bin/cns_solve_1.3'
export CNS_SOLVE=$CNS_SOLVE

if [ -d $CNS_SOLVE ]; then
  if [ ! $?CNS_ARCH ]; then
    export CNS_ARCH='$CNS_SOLVE/bin/getarch'
else
  export CNS_ARCH='unknown'
endif

When I try and source the Mac bash script I get the following error:

-bash: cns_solve_env: line 10: syntax error: unexpected end of file

I cannot understand why I am getting this error.

Answer 1

You should use fi rather than endif and you aren’t closing the first if at all:

export CNS_SOLVE='/Users/ucbthsa/Documents/haddock2.1/software/bin/cns_solve_1.3'
export CNS_SOLVE=$CNS_SOLVE

if [ -d $CNS_SOLVE ]; then
  if [ -z $CNS_ARCH ]; then
    export CNS_ARCH="$CNS_SOLVE/bin/getarch"
  fi
else
  export CNS_ARCH='unknown'
fi

*edit: changed the second test, as William Pursell pointed out, it wouldn’t work as it was in bash.