#apr cd /tmp/upgrade/ tar zxvf apr-1.4.8.tar.gz cd apr-1.4.8 ./configure --prefix=/apache/apr make && make install#apr-util cd .. tar zxvf apr-util-1.5
git reset --hard HEAD^git reflogGit的版本库里存了很多东西，其中最重要的就是称为stage（或者叫index）的暂存区，还有Git为我们自动创建的第一个分支master，以及指向master的一个指针叫HEAD。
1) Install Dependencies sudo yum install yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel xmlto texinfo # asciido
Original URL: http://aboredcoder.com/post/how_to_hide_a_processes_from_other_users_in_linux If you're using the Linux kernel versions 3.2 or above you can hide processes from other users so only
1, shell var$ word=world$ echo hello | awk '{ print $1,$word; }' # Both are treated as awk variables, so it &n
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