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Using sed and grep/egrep to search and replace
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Use this command:
egrep -lRZ "\.jpg|\.png|\.gif" . \
| xargs -0 -l sed -i -e 's/\.jpg\|\.gif\|\.png/.bmp/g'
egrep: find matching lines using extended regular expressions
-l: only list matching filenames
-R: search recursively th...
What does the 'L' in front a string mean in C++?
...r extended character set. Wikipedia has a little discussion on this topic, and c++ examples.
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Schrödingers MySQL table: exists, yet it does not
...er_table, check the data directory to make sure you have both an .frm file and .ibd file for the table in question. If it's MYISAM, there should be a .frm, .MYI and a .MYD file.
The problem can usually be resolved by deleting the orphaned file manually.
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Remove a symlink to a directory
...delete a file, not delete a directory. I believe the difference between rm and rmdir exists because of differences in the way the C library treats each.
At any rate, the first should work, while the second should complain about foo being a directory.
If it doesn't work as above, then check your pe...
How to customize the background color of a UITableViewCell?
I would like to customize the background (and maybe the border too) of all of the UITableViewCells within my UITableView. So far I have not been able to customize this stuff, so I have a bunch of white background cells which is the default.
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How do I view the list of functions a Linux shared library is exporting?
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What you need is nm and its -D option:
$ nm -D /usr/lib/libopenal.so.1
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00012ea0 T alcSetThreadContext
000140f0 T alcSuspendContext
U atanf
U calloc
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Exported sumbols are indicated by a T. Required symbols that mus...
Attach to a processes output for viewing
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There are a few options here. One is to redirect the output of the command to a file, and then use 'tail' to view new lines that are added to that file in real time.
Another option is to launch your program inside of 'screen', which is a sort-of text-based Terminal application. Screen sessions...
How to execute an external program from within Node.js?
...lt of the child process. Example... if the process returns an exit code 0, and I want to call a different method, I seem to run into a plethora of errors.
– continuousqa
Mar 20 '15 at 23:59
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display: inline-block extra margin [duplicate]
I'm working with a few div s that are set to display: inline-block and have a set height and width . In the HTML, if there is a line break after each div there is an automatic 5px margin add to the right and bottom of the div.
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Read file data without saving it in Flask
I am writing my first flask application. I am dealing with file uploads, and basically what I want is to read the data/content of the uploaded file without saving it and then print it on the resulting page. Yes, I am assuming that the user uploads a text file always.
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