{"id":6302,"date":"2015-01-16T06:58:21","date_gmt":"2015-01-16T11:58:21","guid":{"rendered":"http:\/\/g33kinfo.com\/info\/?p=6302"},"modified":"2015-01-16T06:58:21","modified_gmt":"2015-01-16T11:58:21","slug":"install-safe-rm","status":"publish","type":"post","link":"https:\/\/g33kinfo.com\/info\/install-safe-rm\/","title":{"rendered":"Install safe-rm"},"content":{"rendered":"

From http:\/\/duntuk.com\/<\/a><\/p>\n

How to prevent accidentally doing “rm -rf \/” | How to Install safe-rm<\/h1>\n
\n

As a server administrator, I rely mostly on root<\/strong> or sudo<\/strong> access–allowing me absolute control of the server. However, “with great power, comes great responsibility!”<\/p>\n

You can easily accidentally do this devastatingly bad command<\/strong> of wiping your entire system clean.<\/p>\n

\n
rm<\/span> -rf<\/span> \/<\/span>\n# or<\/span>\nrm<\/span> -rf<\/span> \/*<\/span><\/pre>\n<\/div>\n
Which looks almost identical to the popular command<\/p>\n
\n
rm<\/span> -rf<\/span> .\/<\/span>\n# or<\/span>\nrm<\/span> -rf<\/span> .\/*<\/span><\/pre>\n<\/div>\n
<\/p>\n
There was a recent prank on 4chan\u00a0\/b\/<\/strong>\u00a0forum that, in short, instructed users to execute the above command in order to “unlock Apple OS X\u00a0bitcoin mining(link is external)<\/span><\/span><\/a>“.<\/p>\n
\"4Chan<\/p>\n
LOL… Anyhow…<\/p>\n
The fix<\/h3>\n
Replace rm<\/strong> with safe-rm  (link is external)<\/span><\/span><\/a><\/strong>–this basically prevents your from doing destructive commands as shown above…<\/p>\n
\n
cd<\/span> \/<\/span>usr\/<\/span>local\/<\/span>src\n# Find the latest version here: https:\/\/launchpad.net\/safe-rm\/+download?<\/span>\nwget<\/span> https:\/\/<\/span>launchpad.net\/<\/span>safe-rm\/<\/span>trunk\/<\/span>0.10<\/span>\/<\/span>+download\/<\/span>safe-rm-0.10<\/span>.tar.gz\ntar<\/span> xvf safe-rm-0.10<\/span>.tar.gz\ncd<\/span> safe-rm-0.10<\/span><\/pre>\n<\/div>\n
Locate\u00a0rm<\/strong><\/p>\n
\n
find<\/span> \/<\/span> -name<\/span> \"rm\"<\/span><\/pre>\n<\/div>\n
I get this: \/bin\/rm<\/strong> . We’ll use this example for the instructions below.<\/p>\n
Next, we echo our environment $PATH<\/strong>, so we can see the path order which our system’s binaries are being searched for and executed.<\/p>\n
\n
echo<\/span> $PATH<\/span><\/pre>\n<\/div>\n
Gives me the following; this varies accordingly:<\/p>\n
\n
\/<\/span>usr\/<\/span>local\/<\/span>sbin:\/<\/span>usr\/<\/span>local\/<\/span>bin:\/<\/span>sbin:\/<\/span>bin:\/<\/span>usr\/<\/span>sbin:\/<\/span>usr\/<\/span>bin:\/<\/span>root\/<\/span>bin<\/pre>\n<\/div>\n
So looking at the paths above, \/usr\/local\/sbin\u00a0<\/strong>path\u00a0gets processed first, \/usr\/local\/bin<\/strong> second, \/sbin<\/strong> third, and \/bin<\/strong> (location of our\u00a0rm<\/strong>) forth, etc .<\/p>\n
This is KEY: <\/strong>We need to place our safe-rm<\/strong>\u00a0in any of the paths BEFORE<\/strong> the path where rm<\/strong> is located; i.e. any of the first 3 paths, which are before\u00a0\/bin<\/strong><\/p>\n
\n
?mv<\/span> safe-rm \/<\/span>usr\/<\/span>local\/<\/span>sbin?\/<\/span>rm<\/span><\/pre>\n<\/div>\n
And that should do it.<\/p>\n
You can add your custom location by including them in \/etc\/safe-rm.conf<\/strong>; example:<\/p>\n
\n
vi<\/span> \/<\/span>etc\/<\/span>safe-rm.conf \n# Put whatever locations you want<\/span>\n\/<\/span>home\/<\/span>USER\/<\/span>public_html\n\/<\/span>backup\n\/<\/span>private<\/pre>\n<\/div>\n
But by default, safe-rm<\/strong> protects most the usual suspects:<\/p>\n
\n
\/<\/span>bin               \n\/<\/span>boot \n\/<\/span>dev\n\/<\/span>etc\n\/<\/span>home\n\/<\/span>initrd\n\/<\/span>lib \n\/<\/span>lib32\n\/<\/span>lib64\n\/<\/span>proc\n\/<\/span>root \n\/<\/span>sbin\n\/<\/span>sys\n\/<\/span>usr\n\/<\/span>usr\/<\/span>bin\n\/<\/span>usr\/<\/span>include\n\/<\/span>usr\/<\/span>lib\n\/<\/span>usr\/<\/span>local<\/span>\n\/<\/span>usr\/<\/span>local\/<\/span>bin\n\/<\/span>usr\/<\/span>local\/<\/span>include\n\/<\/span>usr\/<\/span>local\/<\/span>sbin\n\/<\/span>usr\/<\/span>local\/<\/span>share\n\/<\/span>usr\/<\/span>sbin\n\/<\/span>usr\/<\/span>share\n\/<\/span>usr\/<\/span>src\n\/<\/span>var<\/pre>\n<\/div>\n
Troubleshooting<\/h3>\n
If your rm<\/strong> is located in the first environment path, then we have to move it to another path after this one.<\/p>\n
For example: Say our rm <\/strong>is located in the first path \/usr\/local\/sbin<\/strong>. We then have to move rm<\/strong> from that path and into a subsequent one, and place safe-rm<\/strong> in a path BEFORE the path where we move rm <\/strong>to.<\/p>\n
\n
cp<\/span> -a<\/span> \/<\/span>usr\/<\/span>local\/<\/span>sbin\/<\/span>rm<\/span> \/<\/span>sbin\n?mv<\/span> \/<\/span>usr\/<\/span>local\/<\/span>sbin\/<\/span>rm<\/span> \/<\/span>usr\/<\/span>local\/<\/span>sbin\/<\/span>rm-01\n?cp<\/span> safe-rm \/<\/span>usr\/<\/span>local\/<\/span>sbin\/<\/span>rm<\/span><\/pre>\n<\/div>\n<\/div>\n
<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
From http:\/\/duntuk.com\/ How to prevent accidentally doing “rm -rf \/” | How to Install safe-rm As a server administrator, I rely mostly on root or sudo access–allowing me absolute control of the server. However, “with great power, comes great responsibility!” You can easily accidentally do this devastatingly bad command of wiping your entire system clean…. <\/p>\n
Read More<\/i><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-6302","post","type-post","status-publish","format-standard","hentry","category-info"],"yoast_head":"\nInstall safe-rm - Linux Shtuff<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/g33kinfo.com\/info\/install-safe-rm\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Install safe-rm - Linux Shtuff\" \/>\n<meta property=\"og:description\" content=\"From http:\/\/duntuk.com\/ How to prevent accidentally doing “rm -rf \/” | How to Install safe-rm As a server administrator, I rely mostly on root or sudo access–allowing me absolute control of the server. 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