ルートディレクトリの複数のディレクトリにファイルがあります。すべてのファイルにchmod 640およびchownコマンドを適用する必要があります。ファイルパスを検索するコマンドと、chmodとchownを適用するコマンドがあります。 findコマンドの出力にchmodとchownを適用する方法
例:
find . -type f -name 'myawesomeapp.jar'
chmod 640 /path/to/file/myawesomeapp.jar
chown root:webapps /path/to/file/myawesomeapp.jar
chmod 640 /path/to/another/file/myawesomeapp.jar
chown root:webapps /path/to/another/file/myawesomeapp.jar
答え1
結果に対してコマンドを実行するには、 find の -exec フラグを使用します。
find . -type f -name 'myawesomeapp.jar' -exec chmod 640 {} \+ -exec chown root:webapps {} \+
あなたの場合、execの2番目のバリエーションを使用したいと思います。
-exec command ;
Execute command; true if 0 status is returned. All following argu‐
ments to find are taken to be arguments to the command until an
argument consisting of `;' is encountered. The string `{}' is
replaced by the current file name being processed everywhere it
occurs in the arguments to the command, not just in arguments where
it is alone, as in some versions of find. Both of these construc‐
tions might need to be escaped (with a `\') or quoted to protect
them from expansion by the shell. See the EXAMPLES section for
examples of the use of the -exec option. The specified command is
run once for each matched file. The command is executed in the
starting directory. There are unavoidable security problems sur‐
rounding use of the -exec action; you should use the -execdir option
instead.
-exec command {} +
This variant of the -exec action runs the specified command on the
selected files, but the command line is built by appending each
selected file name at the end; the total number of invocations of
the command will be much less than the number of matched files. The
command line is built in much the same way that xargs builds its
command lines. Only one instance of `{}' is allowed within the com‐
mand. The command is executed in the starting directory. If find
encounters an error, this can sometimes cause an immediate exit, so
some pending commands may not be run at all. This variant of -exec
always returns true.
{}
渡されるファイル名の代替トークンですfind
。
答え2
tee
パイプラインを複製し、xargs
各コマンドに引数を提供します。
find -name 'myawesomeapp.jar' -print0 | tee >(xargs -0 chown root:webapps) | xargs -0 chmod 640