FM / alternatives

/etc/alternatives

Name	Size	Mode	Actions
aclocal	37738	0755	edit dl rm
aclocal.1.gz	1449	0644	edit dl rm
animate	15016	0755	edit dl rm
animate-im7	15016	0755	edit dl rm
animate-im7.1.gz	2164	0644	edit dl rm
animate.1.gz	2164	0644	edit dl rm
aptitude	4655304	0755	edit dl rm
aptitude.8.gz	14464	0644	edit dl rm
aptitude.cs.8.gz	11660	0644	edit dl rm
aptitude.de.8.gz	15110	0644	edit dl rm
aptitude.es.8.gz	16200	0644	edit dl rm
aptitude.fi.8.gz	7191	0644	edit dl rm
aptitude.fr.8.gz	16624	0644	edit dl rm
aptitude.gl.8.gz	1270	0644	edit dl rm
aptitude.it.8.gz	15348	0644	edit dl rm
aptitude.ja.8.gz	16601	0644	edit dl rm
aptitude.pl.8.gz	17281	0644	edit dl rm
automake	264360	0755	edit dl rm
automake.1.gz	1716	0644	edit dl rm
awk	717248	0755	edit dl rm
awk.1.gz	19414	0644	edit dl rm
builtins.7.gz	508	0644	edit dl rm
bzr	544200	0755	edit dl rm
bzr.1.gz	32578	0644	edit dl rm
c++	1166360	0755	edit dl rm
c89	428	0755	edit dl rm
c89.1.gz	1365	0644	edit dl rm
c99	454	0755	edit dl rm
c99.1.gz	1421	0644	edit dl rm
cc	1162264	0755	edit dl rm
compare	15016	0755	edit dl rm
compare-im7	15016	0755	edit dl rm
compare-im7.1.gz	2242	0644	edit dl rm
compare.1.gz	2242	0644	edit dl rm
composite	15016	0755	edit dl rm
composite-im7	15016	0755	edit dl rm
composite-im7.1.gz	2415	0644	edit dl rm
composite.1.gz	2415	0644	edit dl rm
conjure	15016	0755	edit dl rm
conjure-im7	15016	0755	edit dl rm
conjure-im7.1.gz	946	0644	edit dl rm
conjure.1.gz	946	0644	edit dl rm
convert	15016	0755	edit dl rm
convert-im7	15016	0755	edit dl rm
convert-im7.1.gz	5960	0644	edit dl rm
convert.1.gz	5960	0644	edit dl rm
cpp	1166360	0755	edit dl rm
csh	435656	0755	edit dl rm
csh.1.gz	68646	0644	edit dl rm
ctags	106520	0755	edit dl rm
ctags.1.gz	37	0644	edit dl rm
display	15016	0755	edit dl rm
display-im7	15016	0755	edit dl rm
display-im7.1.gz	2957	0644	edit dl rm
display.1.gz	2957	0644	edit dl rm
ebrowse	47752	0755	edit dl rm
ebrowse.1.gz	1236	0644	edit dl rm
editor	3921984	0755	edit dl rm
editor.1.gz	6232	0644	edit dl rm
editor.da.1.gz	5646	0644	edit dl rm
editor.de.1.gz	7743	0644	edit dl rm
editor.fr.1.gz	6524	0644	edit dl rm
editor.it.1.gz	7019	0644	edit dl rm
editor.ja.1.gz	6855	0644	edit dl rm
editor.pl.1.gz	6296	0644	edit dl rm
editor.ru.1.gz	10225	0644	edit dl rm
editor.tr.1.gz	5880	0644	edit dl rm
emacs	10397968	0755	edit dl rm
emacs.1.gz	6674	0644	edit dl rm
emacsclient	31608	0755	edit dl rm
emacsclient.1.gz	2733	0644	edit dl rm
etags	106328	0755	edit dl rm
etags.1.gz	5127	0644	edit dl rm
ex	3921984	0755	edit dl rm
ex.1.gz	6232	0644	edit dl rm
ex.da.1.gz	5646	0644	edit dl rm
ex.de.1.gz	7743	0644	edit dl rm
ex.fr.1.gz	6524	0644	edit dl rm
ex.it.1.gz	7019	0644	edit dl rm
ex.ja.1.gz	6855	0644	edit dl rm
ex.pl.1.gz	6296	0644	edit dl rm
ex.ru.1.gz	10225	0644	edit dl rm
ex.tr.1.gz	5880	0644	edit dl rm
ftp	178960	0755	edit dl rm
ftp.1.gz	17356	0644	edit dl rm
identify	15016	0755	edit dl rm
identify-im7	15016	0755	edit dl rm
identify-im7.1.gz	2120	0644	edit dl rm
identify.1.gz	2120	0644	edit dl rm
import	15016	0755	edit dl rm
import-im7	15016	0755	edit dl rm
import-im7.1.gz	2282	0644	edit dl rm
import.1.gz	2282	0644	edit dl rm
infobrowser	252696	0755	edit dl rm
infobrowser.1.gz	1373	0644	edit dl rm
ksh	310240	0755	edit dl rm
ksh.1.gz	56698	0644	edit dl rm
lzcat	105160	0755	edit dl rm
lzcat.1.gz	24004	0644	edit dl rm
lzcmp	7588	0755	edit dl rm
lzcmp.1.gz	787	0644	edit dl rm
lzdiff	7588	0755	edit dl rm
lzdiff.1.gz	787	0644	edit dl rm
lzegrep	10413	0755	edit dl rm
lzegrep.1.gz	1006	0644	edit dl rm
lzfgrep	10413	0755	edit dl rm
lzfgrep.1.gz	1006	0644	edit dl rm
lzgrep	10413	0755	edit dl rm
lzgrep.1.gz	1006	0644	edit dl rm
lzless	2383	0755	edit dl rm
lzless.1.gz	780	0644	edit dl rm
lzma	105160	0755	edit dl rm
lzma.1.gz	24004	0644	edit dl rm
lzmore	2234	0755	edit dl rm
lzmore.1.gz	772	0644	edit dl rm
magick	15016	0755	edit dl rm
magick-im7	15016	0755	edit dl rm
magick-script	15016	0755	edit dl rm
magick-script-im7	15016	0755	edit dl rm
Mail	117064	0755	edit dl rm
mail	117064	0755	edit dl rm
Mail.1.gz	11027	0644	edit dl rm
mail.1.gz	11027	0644	edit dl rm
mailx	117064	0755	edit dl rm
mailx.1.gz	11027	0644	edit dl rm
mogrify	15016	0755	edit dl rm
mogrify-im7	15016	0755	edit dl rm
mogrify-im7.1.gz	5923	0644	edit dl rm
mogrify.1.gz	5923	0644	edit dl rm
montage	15016	0755	edit dl rm
montage-im7	15016	0755	edit dl rm
montage-im7.1.gz	2990	0644	edit dl rm
montage.1.gz	2990	0644	edit dl rm
mt	43432	0755	edit dl rm
mt.1.gz	2026	0644	edit dl rm
my.cnf	1126	0644	edit dl rm
nawk	717248	0755	edit dl rm
nawk.1.gz	19414	0644	edit dl rm
nc	43592	0755	edit dl rm
nc.1.gz	6443	0644	edit dl rm
ncftp	334320	0755	edit dl rm
ncftp.1.gz	12216	0644	edit dl rm
netcat	43592	0755	edit dl rm
netcat.1.gz	6443	0644	edit dl rm
pager	249376	0755	edit dl rm
pager.1.gz	28936	0644	edit dl rm
pico	303960	0755	edit dl rm
pico.1.gz	8293	0644	edit dl rm
pinentry	76360	0755	edit dl rm
pinentry.1.gz	1415	0644	edit dl rm
README	100	0644	edit dl rm
rename	4482	0755	edit dl rm
rename.1.gz	2692	0644	edit dl rm
rksh	310240	0755	edit dl rm
rksh.1.gz	56698	0644	edit dl rm
rmt	64704	0755	edit dl rm
rmt.8.gz	2399	0644	edit dl rm
rview	3921984	0755	edit dl rm
rvim	3921984	0755	edit dl rm
stream	15016	0755	edit dl rm
stream-im7	15016	0755	edit dl rm
stream-im7.1.gz	1463	0644	edit dl rm
stream.1.gz	1463	0644	edit dl rm
unlzma	105160	0755	edit dl rm
unlzma.1.gz	24004	0644	edit dl rm
vi	3921984	0755	edit dl rm
vi.1.gz	6232	0644	edit dl rm
vi.da.1.gz	5646	0644	edit dl rm
vi.de.1.gz	7743	0644	edit dl rm
vi.fr.1.gz	6524	0644	edit dl rm
vi.it.1.gz	7019	0644	edit dl rm
vi.ja.1.gz	6855	0644	edit dl rm
vi.pl.1.gz	6296	0644	edit dl rm
vi.ru.1.gz	10225	0644	edit dl rm
vi.tr.1.gz	5880	0644	edit dl rm
view	3921984	0755	edit dl rm
view.1.gz	6232	0644	edit dl rm
view.da.1.gz	5646	0644	edit dl rm
view.de.1.gz	7743	0644	edit dl rm
view.fr.1.gz	6524	0644	edit dl rm
view.it.1.gz	7019	0644	edit dl rm
view.ja.1.gz	6855	0644	edit dl rm
view.pl.1.gz	6296	0644	edit dl rm
view.ru.1.gz	10225	0644	edit dl rm
view.tr.1.gz	5880	0644	edit dl rm
vim	3921984	0755	edit dl rm
vimdiff	3921984	0755	edit dl rm
which	1080	0755	edit dl rm
which.1.gz	463	0644	edit dl rm
which.de1.gz	859	0644	edit dl rm
which.es1.gz	588	0644	edit dl rm
which.fr1.gz	909	0644	edit dl rm
which.it1.gz	590	0644	edit dl rm
which.ja1.gz	726	0644	edit dl rm
which.pl1.gz	786	0644	edit dl rm
which.sl1.gz	652	0644	edit dl rm
www-browser	1962448	0755	edit dl rm
www-browser.1.gz	14682	0644	edit dl rm

Edit: /usr/bin/xzgrep (10413B)

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later

# xzgrep -- a wrapper around a grep program that decompresses files as needed
# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>

# Modified for XZ Utils by Andrew Dudman and Lasse Collin.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

#SET_PATH - This line is a placeholder to ease patching this script.

# Instead of unsetting XZ_OPT, just make sure that xz will use file format
# autodetection. This way memory usage limit and thread limit can be
# specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the
# environment variables.
xz='xz --format=auto'
unset GZIP BZIP BZIP2 LZOP

case ${0##*/} in
  *egrep*) prog=xzegrep; grep=${GREP:-grep -E};;
  *fgrep*) prog=xzfgrep; grep=${GREP:-grep -F};;
  *)       prog=xzgrep; grep=${GREP:-grep};;
esac

version="$prog (XZ Utils) 5.8.1"

usage="Usage: ${0##*/} [OPTION]... [-e] PATTERN [FILE]...
Look for instances of PATTERN in the input FILEs, using their
uncompressed contents if they are compressed.

OPTIONs are the same as for '$grep'.

Report bugs to <xz@tukaani.org>."

# sed script to escape all ' for the shell, and then (to handle trailing
# newlines correctly) turn trailing X on last line into '.
escape='
  s/'\''/'\''\\'\'''\''/g
  $s/X$/'\''/
'
operands=
have_pat=0
files_with_matches=0
files_without_matches=0
no_filename=0
with_filename=0

# See if -H and --label options are supported (GNU and *BSDs).
if test f:x = "$(eval "echo x | $grep -H --label=f x 2> /dev/null")"; then
  grep_supports_label=1
else
  grep_supports_label=0
fi

while test $# -ne 0; do
  option=$1
  shift
  optarg=

case $option in
  (-[0123456789abcdEFGhHiIKlLnoPqrRsTuUvVwxyzZ]*[!0123456789]*)
    # Something like -Fiv was specified, that is, $option contains more
    # than one option of which the first option (in this example -F)
    # doesn't take an argument. Split the first option into a standalone
    # argument and continue parsing the rest of the options (in this example,
    # replace -Fiv with -iv in the argument list and set option=-F).
    #
    # If there are digits [0-9] they are treated as if they were a single
    # option character because this syntax is an alias for -C for GNU grep.
    # For example, "grep -25F" is equivalent to "grep -C25 -F". If only
    # digits are specified like "grep -25" we don't get here because the
    # above pattern in the case-statement doesn't match such strings.
    arg2=-\'$(LC_ALL=C expr "X${option}X" : 'X-.[0-9]*$.*$' |
                LC_ALL=C sed "$escape")
    eval "set -- $arg2 "'${1+"$@"}'
    option=$(LC_ALL=C expr "X$option" : 'X$-.[0-9]*$');;
  (--binary-*=* | --[lm]a*=* | --reg*=*)
    # These options require an argument and an argument has been provided
    # with the --foo=argument syntax. All is good.
    ;;
  (-[ABCDefmX] | --binary-* | --file | --[lm]a* | --reg*)
    # These options require an argument which should now be in $1.
    # If it isn't, display an error and exit.
    case ${1?"$option option requires an argument"} in
    (*\'*)
      optarg=" '"$(printf '%sX\n' "$1" | LC_ALL=C sed "$escape");;
    (*)
      optarg=" '$1'";;
    esac
    shift;;
  (--)
    break;;
  (-?*)
    ;;
  (*)
    case $option in
    (*\'*)
      operands="$operands '"$(printf '%sX\n' "$option" |
                                LC_ALL=C sed "$escape");;
    (*)
      operands="$operands '$option'";;
    esac
    ${POSIXLY_CORRECT+break}
    continue;;
  esac

case $option in
  (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*)
    printf >&2 '%s: %s: Option not supported\n' "$0" "$option"
    exit 2;;
  (-[ef]* | --file | --file=* | --reg*)
    have_pat=1;;
  (--h | --he | --hel | --help)
    printf '%s\n' "$usage" || exit 2
    exit;;
  (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \
  | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \
  | --with-filename)
    with_filename=1
    continue;;
  (-l | --files-with-*)
    files_with_matches=1
    continue;;
  (-L | --files-witho*)
    files_without_matches=1
    continue;;
  (-h | --no-f*)
    no_filename=1;;
  (-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
    printf '%s\n' "$version" || exit 2
    exit;;
  esac

case $option in
  (*\'?*)
    option=\'$(printf '%sX\n' "$option" | LC_ALL=C sed "$escape");;
  (*)
    option="'$option'";;
  esac

grep="$grep $option$optarg"
done

eval "set -- $operands "'${1+"$@"}'

if test $have_pat -eq 0; then
  case ${1?"Missing pattern; try '${0##*/} --help' for help"} in
  (*\'*)
    grep="$grep -e '"$(printf '%sX\n' "$1" | LC_ALL=C sed "$escape");;
  (*)
    grep="$grep -e '$1'";;
  esac
  shift
fi

if test $# -eq 0; then
  set -- -
fi

exec 3>&1

# res=1 means that no file matched yet
res=1

for i; do
  case $i in
    *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdf";;
    *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdf";;
    *[-.]lzo | *[-.]tzo) uncompress="lzop -cdf";;
    *[-.]zst | *[-.]tzst) uncompress="zstd -cdfq";; # zstd needs -q.
    *[-.]lz4) uncompress="lz4 -cdf";;
    *) uncompress="$xz -cdfqQ";; # -qQ to ignore warnings like unsupp. check.
  esac
  # xz_status will hold the decompressor's exit status.
  # Exit status of grep (and in rare cases, printf or sed) is
  # available as the exit status of this assignment command.
  xz_status=$(
    exec 5>&1
    ($uncompress -- "$i" 5>&-; echo $? >&5) 3>&- |
    if test $files_with_matches -eq 1; then
      eval "$grep -q" && { printf '%s\n' "$i" || exit 2; }
    elif test $files_without_matches -eq 1; then
      eval "$grep -q" || {
        r=$?
        if test $r -eq 1; then
          printf '%s\n' "$i" || r=2
        fi
        exit $r
      }
    elif test $with_filename -eq 0 &&
         { test $# -eq 1 || test $no_filename -eq 1; }; then
      eval "$grep"
    elif test $grep_supports_label -eq 1; then
      # The grep implementation in use allows us to specify the filename
      # that grep will prefix to the output lines. This is faster and
      # less prone to security bugs than the fallback method that uses sed.
      # This also avoids confusing output with GNU grep >= 3.5 (2020-09-27)
      # which prints "binary file matches" to stderr instead of stdout.
      #
      # If reading from stdin, let grep use whatever name it prefers for
      # stdin. With GNU grep it is a locale-specific translated string.
      if test "x$i" = "x-"; then
        eval "$grep -H"
      else
        eval "$grep -H --label \"\$i\""
      fi
    else
      # Append a colon so that the last character will never be a newline
      # which would otherwise get lost in shell command substitution.
      i="$i:"

# Escape & \ | and newlines only if such characters are present
      # (speed optimization).
      case $i in
      (*'
'* | *'&'* | *'\'* | *'|'*)
        # If sed fails, set i to a known safe string to ensure that
        # failing sed did not create a half-escaped dangerous string.
        i=$(printf '%s\n' "$i" | LC_ALL=C sed 's/[&\|]/\\&/g; $!s/$/\\/') ||
            i='(unknown filename):';;
      esac

# $i already ends with a colon so do not add it here.
      sed_script="s|^|$i|"

# If grep or sed fails, pick the larger value of the two exit statuses.
      # If sed fails, use at least 2 since we use >= 2 to indicate errors.
      r=$(
        exec 4>&1
        (eval "$grep" 4>&-; echo $? >&4) 3>&- |
            LC_ALL=C sed "$sed_script" >&3 4>&-
      ) || {
        sed_status=$?
        test "$sed_status" -lt 2 && sed_status=2
        test "$r" -lt "$sed_status" && r=$sed_status
      }
      exit $r
    fi >&3 5>&-
  )
  r=$?

# If grep or sed or other non-decompression command failed with a signal,
  # exit immediately and ignore the possible remaining files.
  #
  # NOTE: Instead of 128 + signal_number, some shells use
  # 256 + signal_number (ksh) or 384 + signal_number (yash).
  # This is fine for us since their "exit" and "kill -l" commands take
  # this into account. (At least the versions I tried do but there is
  # a report of an old ksh variant whose "exit" truncates the exit status
  # to 8 bits without any special handling for values indicating a signal.)
  test "$r" -ge 128 && exit "$r"

if test -z "$xz_status"; then
    # Something unusual happened, for example, we got a signal and
    # the exit status of the decompressor was never echoed and thus
    # $xz_status is empty. Exit immediately and ignore the possible
    # remaining files.
    exit 2
  elif test "$xz_status" -ge 128; then
    # The decompressor died due to a signal. SIGPIPE is ignored since it can
    # occur if grep exits before the whole file has been decompressed (grep -q
    # can do that). If the decompressor died with some other signal, exit
    # immediately and ignore the possible remaining files.
    test "$(kill -l "$xz_status" 2> /dev/null)" != "PIPE" && exit "$xz_status"
  elif test "$xz_status" -gt 0; then
    # Decompression failed but we will continue with the remaining
    # files anyway. Set exit status to at least 2 to indicate an error.
    test "$r" -lt 2 && r=2
  fi

# Since res=1 is the initial value, we only need to care about
  # matches (r == 0) and errors (r >= 2) here; r == 1 can be ignored.
  if test "$r" -ge 2; then
    # An error occurred in decompressor, grep, or some other command. Update
    # res unless a larger error code has been seen with an earlier file.
    test "$res" -lt "$r" && res=$r
  elif test "$r" -eq 0; then
    # grep found a match and no errors occurred. Update res if no errors have
    # occurred with earlier files.
    test "$res" -eq 1 && res=0
  fi
done

# 0: At least one file matched and no errors occurred.
# 1: No matches were found and no errors occurred.
# >=2: Error. It's unknown if matches were found.
exit "$res"

cmd: