install-latex-package.sh

i wrote a script that installs a latex package (e.g. downloaded from ctan.org) from .ins, .dtx or .sty files for texlive distributions. it creates a directory in /usr/share/texmf-texlive/tex/latex/, moves the .sty files there and runs mktexlsr.

it WorksForMe, but it's probably badly written because i have no experience with writing shell scripts.

so if you want to you can
 A) modify the script so it becomes better
 B) tell me how some program already does this way better/easier
 C) berate me for something else
 D) sage/post a meme

#!/bin/bash

PROGNAME="install-latex-package.sh"

if [ -z $1 ]; then
    echo "$PROGNAME: .ins, .dtx or .sty file needed as argument"
    exit
fi

FILENAME=$1
SUFFIX=`expr "$FILENAME" : '.*\(\.ins$\)'`

if [ -z $SUFFIX ]; then
    SUFFIX=`expr "$FILENAME" : '.*\(\.dtx$\)'`
    if [ -z $SUFFIX ]; then
        SUFFIX=`expr "$FILENAME" : '.*\(\.sty$\)'`
        if [ -z $SUFFIX ]; then
            echo "$PROGNAME: .ins, .dtx or .sty file needed as argument"
            exit
        fi
    fi
fi

if [ ! -e $FILENAME ]; then
    echo "$PROGNAME: $FILENAME does not exist"
    exit
fi

PREFIX=${FILENAME:0:(${#FILENAME} - 4)}

echo "$PROGNAME: installing package \"$PREFIX\""
if [ "$SUFFIX" == ".ins" ]; then
    latex $FILENAME
elif [ "$SUFFIX" == ".dtx" ]; then
    tex $FILENAME
fi

if [ $? != 0 ]; then
    echo "$PROGNAME: failed to install package"
    exit
fi

PACKAGEPATH="/usr/share/texmf-texlive/tex/latex/"

echo "$PROGNAME: creating folder $PACKAGEPATH$PREFIX"
sudo mkdir $PACKAGEPATH$PREFIX
if [ $? != 0 ]; then
    echo "$PROGNAME: failed to create folder"
    exit
fi

echo "$PROGNAME: copying *.sty to $PACKAGEPATH$PREFIX"
sudo cp *.sty $PACKAGEPATH$PREFIX
if [ $? != 0 ]; then
    echo "$PROGNAME: failed to copy .sty files"
    exit
fi

if [ -e *.def ]; then
    echo "$PROGNAME: copying *.def to $PACKAGEPATH$PREFIX"
    sudo cp *.def $PACKAGEPATH$PREFIX
    if [ $? != 0 ]; then
        echo "$PROGNAME: failed to copy .def files"
        exit
    fi
fi

echo "$PROGNAME: updating latex package library"
sudo mktexlsr
if [ $? != 0 ]; then
    echo "$PROGNAME: failed to update library"
    exit
fi

echo "$PROGNAME: package \"$PREFIX\" successfully installed"

1. $0
2. ${FILENAME/#*./} and ${FILENAME/%.*/}
3. Backtick syntax considered harmful.
4. Don't use sudo in a script.
5. Actually read the Bash documentation.