A simple script to safely load a back-up of the Julia sys.dll and libjulia.dll.

julia-loadimage.sh

#!/bin/bash

# Moves libjulia.$NAME.dll and sys.$NAME.dll back into place. (See julia-saveimage.sh.)
# If the files already exist, prompts before overwriting.
#
# Usage: ./julia-loadimage.sh <name>

LIB=usr/lib/julia
BIN=usr/bin
ABORT=0
NAME=$1
if [[ `echo $OS | grep Windows` != "" ]]; then
  EXT="dll";
else
  EXT="so";
fi

if [[ ! -e "$LIB/sys.$NAME.$EXT" || ! -e "$LIB/sys.$NAME.o" || ! -e "$BIN/libjulia.$NAME.$EXT" ]]; then
    echo "error: no image and object named $NAME"
    ABORT=1
fi

if [[ ABORT -ne 1 && "$NAME" == "" ]]; then
    echo "error: no name provided"
    ABORT=1
fi

if [[ ABORT -ne 1 ]]; then
    if [[ -e "$LIB/sys.$EXT" || -e "$LIB/sys.o" || -e "$BIN/libjulia.$EXT" ]]; then
        echo -n "current image and object would be overwritten. proceed? [Y,N] "
        read i
        if [[ "$i" == "n" || "$i" == "N" ]]; then
           ABORT=1
        fi
    fi
fi

if [[ ABORT -eq 0 ]]; then
    cp $LIB/sys.$NAME.$EXT $LIB/sys.$EXT
    if [[ $? -ne 0 ]]; then
        echo "error: could not copy image file into place"
        ABORT=1
    fi
    if [[ ABORT -ne 1 ]]; then
        cp $LIB/sys.$NAME.o $LIB/sys.o
        if [[ $? -ne 0 ]]; then
            echo "error: could not copy object file into place"
            ABORT=1
        fi
    fi
    if [[ ABORT -ne 1 ]]; then
        cp $BIN/libjulia.$NAME.$EXT $BIN/libjulia.$EXT
        if [[ $? -ne 0 ]]; then
            echo "error: could not copy libjulia into place"
            ABORT=1
        fi
    fi

    if [[ ABORT -eq 0 ]]; then
        rm $LIB/sys.$NAME.$EXT
        rm $LIB/sys.$NAME.o
        rm $BIN/libjulia.$NAME.$EXT
    else
        rm $LIB/sys.$EXT
        rm $LIB/sys.o
        rm $BIN/libjulia.$EXT
    fi
fi

if [[ ABORT -eq 1 ]]; then
    echo "quit"
fi

exit $ABORT