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#!/bin/sh #- # Copyright © 2014 # Thorsten “mirabilos” Glaser <[email protected]> # # Provided that these terms and disclaimer and all copyright notices # are retained or reproduced in an accompanying document, permission # is granted to deal in this work without restriction, including un‐ # limited rights to use, publicly perform, distribute, sell, modify, # merge, give away, or sublicence. # # This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to # the utmost extent permitted by applicable law, neither express nor # implied; without malicious intent or gross negligence. In no event # may a licensor, author or contributor be held liable for indirect, # direct, other damage, loss, or other issues arising in any way out # of dealing in the work, even if advised of the possibility of such # damage or existence of a defect, except proven that it results out # of said person’s immediate fault when using the work as intended. #- # eatmydata utility / wrapper compatible with both 26 and 82 series, # but only on Debian systems. usage() { echo >&2 "usage: $0 [--] command [arg ...]" exit 2 } # everything in a function to avoid environment pollution runprog() { local cmd me spath saveIFS pathelem tgt rltgt # Detect operation mode. If this script is run via a symbolic link, # look for the basename in the PATH and execute that. if test -L "$0"; then # symlink mode cmd=$(basename "$0") else # regular mode test x"$1" = x"--" && shift test -n "$1" || usage cmd=$1 shift fi # detect command to run, if necessary case $cmd in (*/*) ;; (*) # $cmd does not contain a '/' # look in the PATH but avoid loops with myself me=$(readlink -f "$0") # append :/dev/null both to catch a trailing colon # and for an easy abort condition spath=$PATH:/dev/null saveIFS=$IFS IFS=: for pathelem in $spath; do if test x"$pathelem" = x"/dev/null"; then echo >&2 E: eatmydata: \ "unable to find '$cmd' in PATH" exit 1 fi tgt=${pathelem:-.}/$cmd if test -x "$tgt"; then # still call whathever is in the path, even if it is a link, # as there are programs relying on argv[0] content. rltgt=$(readlink -f "$tgt") test x"$rltgt" = x"$me" || break fi done IFS=$saveIFS cmd=$tgt ;; esac # set up environment LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+"$LD_LIBRARY_PATH:"}/usr/lib/libeatmydata LD_PRELOAD=${LD_PRELOAD:+"$LD_PRELOAD "}libeatmydata.so export LD_LIBRARY_PATH LD_PRELOAD # execute the command exec "$cmd" "$@" } runprog "$@"