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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...of rvalue, i.e. they're the rvalues that aren't xvalues.
Glvalues are the union of xvalues and lvalues in one group, because they do share a lot of properties in common.
So really, it all comes down to xvalues and the need to restrict movement to exactly and only certain places. Those places are ...
Given two directory trees, how can I find out which files differ by content?
...les in subdirs, for example rsync --options /usr /bin /var /sbin /lib /old_root will effectively compare current root / (by specifying all subdirs in it) and /old_root (containing for example some older backup of /), which is something diff -r can't do. And if you assume that files with same size, ...
How do I reword the very first git commit message?
...
Do git rebase -i --root
(point to root instead of pointing to a specific commit)
This way, the first commit is also included and you can just reword it like any other commit.
The --root option was introduced in Git v1.7.12 (2012). Before the...
How can I write a heredoc to a file in Bash script?
...t operator it can be combined with sudo if you need to write to files with root permissions.
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Brew update failed: untracked working tree files would be overwritten by merge
... This is how permissions on my brew prefix look like here: drwxrwxr-x 16 root admin 646 Dec 27 20:30 /usr/local/
– favoretti
Jan 1 '13 at 19:37
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Bash script error [: !=: unary operator expected
...ef | grep -v '\['`"
else
echo "`ps -ef | grep '\[' | grep root`"
fi;;
*) echo "usage: $0 [-v]"
exit 1;; #It is good practice to throw a code, hence allowing $? check
esac
If one cares not where the '-v' arg is, then simply drop the case inside a loop. The woul...
Eclipse Workspaces: What for and why?
...age to tell Eclipse these information. All you have to do explicitly is to select the folder where these files will be placed. And this folder doesn't need to be the same where you put your source code - preferentially it won't be.
Exploring each item above:
a set of (somehow) related projects
E...
How to change an application icon programmatically in Android?
...ication's icon from the program so next time they would see the previously selected icon in the launcher.
10 Answers
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Rollback to an old Git commit in a public repo
...nges to the whole tree. You should execute this command in the git project root. If you are in any sub directory, then this command only changes the files in the current directory. Then commit and you should be good.
You can undo this by
git reset --hard
that will delete all modifications from ...
How do I request a file but not save it with Wget? [closed]
... to make http requests to a fresh web server. I am doing this to warm the MySQL cache. I do not want to save the files after they are served.
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