我很难执行从文本文件中读取的bash命令(带选项)。 在我的脚本中有一个for循环,它从文件中读取命令但出错:
cat com.txt
apt-get update
我的剧本:
for i in `cat com.txt` ; do sudo bash -c $i ; done;
显示的错误消息是:
apt 1.0.1ubuntu2 for amd64 compiled on Oct 28 2014 20:55:14
Usage: apt-get [options] command
apt-get [options] install|remove pkg1 [pkg2 ...]
apt-get [options] source pkg1 [pkg2 ...]
apt-get is a simple command line interface for downloading and
installing packages. The most frequently used commands are update
and install.
Commands:
update - Retrieve new lists of packages
upgrade - Perform an upgrade
install - Install new packages (pkg is libc6 not libc6.deb)
remove - Remove packages
autoremove - Remove automatically all unused packages
purge - Remove packages and config files
source - Download source archives
build-dep - Configure build-dependencies for source packages
dist-upgrade - Distribution upgrade, see apt-get(8)
dselect-upgrade - Follow dselect selections
clean - Erase downloaded archive files
autoclean - Erase old downloaded archive files
check - Verify that there are no broken dependencies
changelog - Download and display the changelog for the given package
download - Download the binary package into the current directory
Options:
-h This help text.
-q Loggable output - no progress indicator
-qq No output except for errors
-d Download only - do NOT install or unpack archives
-s No-act. Perform ordering simulation
-y Assume Yes to all queries and do not prompt
-f Attempt to correct a system with broken dependencies in place
-m Attempt to continue if archives are unlocatable
-u Show a list of upgraded packages as well
-b Build the source package after fetching it
-V Show verbose version numbers
-c=? Read this configuration file
-o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp
See the apt-get(8), sources.list(5) and apt.conf(5) manual
pages for more information and options.
This APT has Super Cow Powers.
bash: update: command not found
答案 0 :(得分:2)
在您的示例中,您没有执行整行。您只需执行apt-get
(需要参数),然后执行update
(这不是命令)。
只需在source
的文件中使用bash
执行命令(不需要执行位):
source com.txt
答案 1 :(得分:2)
这是not to read lines with cat
in a for
loop的众多原因之一。请改用while read -r
。
while read -r cmd; do
sudo $cmd
done <com.txt
在您的示例中,bash -c
似乎是多余的,但这取决于您的命令以及您在sudoers
中设置的权限。对于任何更复杂的事情,您可能会遇到http://mywiki.wooledge.org/BashFAQ/050而source
答案会比可能的解决方法更有意义。