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Shell脚本what-about

tag-icon • tag-icon command-line bash
Shell脚本what-about

如何获取 Ubuntu 中程序的位置？例如，我有Oracle，如何获取 的文件夹 racine（位置）Oracle？

答案1

Bash 和 Dash 具有command内置命令，-v如果命令引用可执行文件，则可以使用开关显示命令的位置。对于内置命令和别名，结果会有所不同。示例：

$ command -v java
/usr/bin/java
$ echo $?
0
$ command -v echo
echo
$ command -v ls
alias ls='ls -h --color=auto'
$ command -v non-existing_command; echo $?
1

此外，所有从 Sh 派生的 shell 都知道type告诉您任何命令的性质的命令。

$ type java
java is /usr/bin/java
$ type ls
ls is aliased to `ls -h --color=auto'
$ type echo
echo is a shell builtin
$ type non-existing_command
bash: type: non-existing_command: not found

如果你的 shell（例如 Bash）支持它，则type -a列出命令可能引用的所有内容：

$ type -a ls
ls is aliased to `ls -h --color=auto'
ls is /bin/ls
$ type -a echo
echo is a shell builtin
echo is /bin/echo
$ type -a touch
touch is /usr/bin/touch
touch is /bin/touch

答案2

你也可以使用whereis。它将显示二进制文件的路径以及一些相关文件，如文档：

whereis program

答案3

您可以使用它which来确定正在运行哪个二进制文件。

  • which ssh
  • which Oracle

这些是示例，将返回二进制文件的完整路径。

您也可以使用它whereis来查找其他信息，但在这种情况下它可能会让您感到困惑。

答案4

Shell脚本what-about

我有一个 bash shellscript，它尝试

  • 找到程序所在的位置，
  • 找到相应的包并
  • 告诉它是什么类型的程序

也许使用名称what-about，使其可执行，并将其放入 PATH，

#!/bin/bash

LANG=C
inversvid="\0033[7m"
resetvid="\0033[0m"

if [ $# -ne 1 ]
then
 echo "Usage: ${0##*/} <program-name>"
 echo "Will try to find corresponding package"
 echo "and tell what kind of program it is"
 exit 1
fi
command="$1"

str=;for ((i=1;i<=$(tput cols);i++)) do str="-$str";done
tmp="$command"
first=true
curdir="$(pwd)"
tmq=$(which "$command")
tdr="${tmq%/*}"
tex="${tmq##*/}"
if test -d "$tdr"; then cd "$tdr"; fi
#echo "cwd='$(pwd)' ################# d"

while $first || [ "${tmp:0:1}" == "l" ]
do
 first=false
 tmp=${tmp##*\ }
 tmq="$tmp"
 tmp=$(ls -l "$(which "$tmp")" 2>/dev/null)
 tdr="${tmq%/*}"
 tex="${tmq##*/}"
 if test -d "$tdr"; then cd "$tdr"; fi
# echo "cwd='$(pwd)' ################# d"
 if [ "$tmp" == "" ]
 then
  tmp=$(ls -l "$tex" 2>/dev/null)
  tmp=${tmp##*\ }
  if [ "$tmp" == "" ]
  then
   echo "$command is not in PATH"
#   package=$(bash -ic "$command -v 2>&1")
#   echo "package=$package XXXXX 0"
   bash -ic "alias '$command' > /dev/null 2>&1" > /dev/null 2>&1
   if [ $? -ne 0 ]
   then
    echo 'looking for package ...'
    package=$(bash -ic "$command -v 2>&1"| sed -e '0,/with:/d'| grep -v '^$')
   else
    echo 'alias, hence not looking for package'
   fi
#   echo "package=$package XXXXX 1"
   if [ "$package" != "" ]
   then
    echo "$str"
    echo "package: [to get command '$1']"
    echo -e "${inversvid}${package}${resetvid}"
   fi
   else
    echo "$tmp"
   fi
 else
  echo "$tmp"
 fi
done
tmp=${tmp##*\ }
if [ "$tmp" != "" ]
then
 echo "$str"
 program="$tex"
 program="$(pwd)/$tex"
 file "$program"
 if [ "$program" == "/usr/bin/snap" ]
 then
  echo "$str"
  echo "/usr/bin/snap run $command     # run $command "
  sprog=$(find /snap/"$command" -type f -iname "$command" \
   -exec file {} \; 2>/dev/null | sort | tail -n1)
  echo -e "${inversvid}file: $sprog$resetvid"
  echo "/usr/bin/snap list $command    # list $command"
  slist="$(/usr/bin/snap list "$command")"
  echo -e "${inversvid}$slist$resetvid"
 else
  package=$(dpkg -S "$program")
  if [ "$package" == "" ]
  then
   package=$(dpkg -S "$tex" | grep -e " /bin/$tex$" -e " /sbin/$tex$")
   if [ "$package" != "" ]
   then
    ls -l /bin /sbin
   fi
  fi
  if [ "$package" != "" ]
  then
   echo "$str"
   echo " package: /path/program  [for command '$1']"
   echo -e "${inversvid} $package ${resetvid}"
  fi
 fi
fi
echo "$str"
#alias=$(grep "alias $command=" "$HOME/.bashrc")
alias=$(bash -ic "alias '$command' 2>/dev/null"| grep "$command")
if [ "$alias" != "" ]
then
 echo "$alias"
fi
type=$(type "$command" 2>/dev/null)
if [ "$type" != "" ]
then
 echo "type: $type"
elif [ "$alias" == "" ]
then
 echo "type: $command: not found"
fi
cd "$curdir"

演示示例

有时有两种选择，例如，对于echo，既有单独的编译程序，也有 shell 内置命令。除非您使用单独程序的完整路径，否则 shell 内置命令将获得优先级并被使用，

echo在 18.04.6 LTS 中

$ what-about echo
-rwxr-xr-x 1 root root 35000 jan 18  2018 /bin/echo
----------------------------------------------------------------------------------
/bin/echo: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically
linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0,
BuildID[sha1]=057373f1356c861e0ec5b52c72804c86c6842cd5, stripped
----------------------------------------------------------------------------------
 package: /path/program  [for command 'echo']
 coreutils: /bin/echo 
----------------------------------------------------------------------------------
type: echo is a shell builtin

echo在 22.04 LTS 中

$ what-about echo
-rwxr-xr-x 1 root root 35120 Feb  7 17:03 /usr/bin/echo
----------------------------------------------------------------------------------
/usr/bin/echo: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically
linked, interpreter /lib64/ld-linux-x86-64.so.2,
BuildID[sha1]=b56baf290970e98b8056b1a8114a4404b8186689, for GNU/Linux 3.2.0, stripped
dpkg-query: no path found matching pattern /usr/bin/echo
lrwxrwxrwx 1 root root 7 Apr 27 10:02 /bin -> usr/bin
lrwxrwxrwx 1 root root 8 Apr 27 10:02 /sbin -> usr/sbin
----------------------------------------------------------------------------------
 package: /path/program  [for command 'echo']
 coreutils: /bin/echo 
----------------------------------------------------------------------------------
type: echo is a shell builtin

rename在 18.04.6 LTS 中

有时命令链接到程序，可能是隐藏的，例如rename我使用的版本，

$ what-about rename
lrwxrwxrwx 1 root root 24 maj 12  2018 /usr/bin/rename -> /etc/alternatives/rename
lrwxrwxrwx 1 root root 20 maj 12  2018 /etc/alternatives/rename -> /usr/bin/file-rename
-rwxr-xr-x 1 root root 3085 feb 20  2018 /usr/bin/file-rename
----------------------------------------------------------------------------------
/usr/bin/file-rename: Perl script text executable
----------------------------------------------------------------------------------
 package: /path/program  [for command 'rename']
 rename: /usr/bin/file-rename 
----------------------------------------------------------------------------------
type: rename is /usr/bin/rename

rm在 18.04.6 LTS 中

rm为了避免错误，我为 指定了一个别名，并且该别名的优先级高于 中的程序PATH。您可以在 前面加上反斜杠 ，\rm以跳过别名并直接运行程序。（请记住，别名仅适用于特定用户，而不适用于sudo其他用户，除非他们定义了类似的别名。）

$ what-about rm
-rwxr-xr-x 1 root root 63704 jan 18  2018 /bin/rm
---------------------------------------------------------------------------
/bin/rm: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV),
dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for
GNU/Linux 3.2.0, uildID[sha1]=864c9bbef111ce358b3452cf7ea457d292ba93f0,
stripped
---------------------------------------------------------------------------
 package: /path/program  [for command 'rm']
 coreutils: /bin/rm 
---------------------------------------------------------------------------
alias rm='rm -i'
type: rm is /bin/rm

firefox在 18.04.6 LTS 中

$ what-about firefox
lrwxrwxrwx 1 root root 25 jun  8 23:23 /usr/bin/firefox -> ../lib/firefox/firefox.sh
-rwxr-xr-x 1 root root 2667 jun  8 23:23 ../lib/firefox/firefox.sh
----------------------------------------------------------------------------------
/usr/lib/firefox/firefox.sh: POSIX shell script, ASCII text executable
----------------------------------------------------------------------------------
 package: /path/program  [for command 'firefox']
 firefox: /usr/lib/firefox/firefox.sh 
----------------------------------------------------------------------------------
type: firefox is /usr/bin/firefox

firefox在 22.04 LTS 中

$ what-about firefox
lrwxrwxrwx 1 root root 13 Jun 14 10:17 /snap/bin/firefox -> /usr/bin/snap
-rwxr-xr-x 1 root root 15815640 Apr 21 10:50 /usr/bin/snap
----------------------------------------------------------------------------------
/usr/bin/snap: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically
linked, interpreter /lib64/ld-linux-x86-64.so.2, Go
BuildID=_CKxPPsUzOWnuqfKlk4n/eiKeSmbgVb16CaXm3O1l/-ofceI8uzhaCgwaTtgJt/YygjnGD2ASByLbaEMRR4,
stripped
----------------------------------------------------------------------------------
/usr/bin/snap run firefox     # run firefox 
/usr/bin/snap list firefox    # list firefox
Name     Version    Rev   Tracking         Publisher  Notes
firefox  101.0.1-1  1443  latest/stable/…  mozilla**  -
----------------------------------------------------------------------------------
type: firefox is /snap/bin/firefox

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