Bash Centos7 "which" 命令
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Bash Centos7 "which" command
提问by asgard
I realize this might be a dumb question but I have a Centos-7 minimal server install and the "which" command does not exist or is missing. I have a script that needs it and I cannot find out what the yum package is that installs it. The code is below and is from a make file.
我意识到这可能是一个愚蠢的问题，但我安装了 Centos-7 最小服务器，并且“which”命令不存在或丢失。我有一个需要它的脚本，但我找不到安装它的 yum 包是什么。代码在下面，来自一个 make 文件。
which grep > /dev/null 2> /dev/null
if test "$?" != "0"
then
echo "\"grep\" command not found."
echo "Installation is aborted."
exit 1
fi
Any help would be appreciated... this is difficult if not impossible to google
任何帮助将不胜感激......这对谷歌来说很困难，如果不是不可能的话
回答by Wintermute
To find a package in CentOS, use yum whatprovides:
要在 CentOS 中查找软件包，请使用 yum whatprovides：
yum whatprovides *bin/which
In this particular case, the package is called which, so
在这种特殊情况下，包被称为which，所以
yum install which
should pull it in.
应该把它拉进去。
回答by Sriharsha Kalluru
Instead of whichcommand you can use typecommand.
which您可以使用type命令代替命令。
type grep > /dev/null 2> /dev/null
if test "$?" != "0"
then
echo "\"grep\" command not found."
echo "Installation is aborted."
exit 1
fi
