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git rebase without changing commit timestamps
... " -f1); test -n "$__date" && export GIT_COMMITTER_DATE=$__date || cat'
If something goes wrong, just checkout git reflog or all the refs/original/ refs.
Furthormore, you can do the similar thing to the author's timestamp.
For example, if the author's timestamp of some commits are out of...
How to simulate the environment cron executes a script with?
...porarily):
* * * * * env > ~/cronenv
After it runs, do this:
env - `cat ~/cronenv` /bin/sh
This assumes that your cron runs /bin/sh, which is the default regardless of the user's default shell.
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How can I undo git reset --hard HEAD~1?
...4 file2
$ git reset --hard HEAD^
HEAD is now at 1a75c1d... added file1
$ cat file2
cat: file2: No such file or directory
$ git reflog
1a75c1d... HEAD@{0}: reset --hard HEAD^: updating HEAD
f6e5064... HEAD@{1}: commit: added file2
$ git reset --hard f6e5064
HEAD is now at f6e5064... added file2
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'typeid' versus 'typeof' in C++
...eof keyword.
typeid is a C++ language operator which returns type identification information at run time. It basically returns a type_info object, which is equality-comparable with other type_info objects.
Note, that the only defined property of the returned type_info object has is its being equal...
How do you read from stdin?
...data), "lines."
On Unix, you could test it by doing something like:
% cat countlines.py | python countlines.py
Counted 3 lines.
On Windows or DOS, you'd do:
C:\> type countlines.py | python countlines.py
Counted 3 lines.
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Using multiple delimiters in awk
....
awk -F'[/=]' '{print $3 "\t" $5 "\t" $8}' file
Produces:
tc0001 tomcat7.1 demo.example.com
tc0001 tomcat7.2 quest.example.com
tc0001 tomcat7.5 www.example.com
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How to get the nvidia driver version from the command line?
...omething wrong with your PATH. You could try to find nvidia-smi like so: locate nvidia-smi
– Brendan Wood
Mar 10 '17 at 15:46
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How to round an average to 2 decimal places in PostgreSQL?
...s not define round(double precision, integer). For reasons @Mike Sherrill 'Cat Recall' explains in the comments, the version of round that takes a precision is only available for numeric.
regress=> SELECT round( float8 '3.1415927', 2 );
ERROR: function round(double precision, integer) does not ...
How to get git diff with full context?
...
Got inspiration and so I added a git alias.
$ cat ~/.gitconfig | fgrep diff
df = "!git diff -U$(wc -l \"$1\" | cut -d ' ' -f 1) \"$1\""
$ git df <file>
Update:
Just found "git df" does not work sometimes, due to directory change when executing git alias....
Bash command to sum a column of numbers [duplicate]
... supported by Mac OS X 10.7.4 paste. However, since the POSIX 2008 specification of paste supports -s, this is a deficiency in the Mac OS X version.
– Jonathan Leffler
Aug 15 '12 at 18:56
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