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How can I use a file in a command and redirect output to the same file without truncating it?
...can use a temporary file though.
#!/bin/sh
tmpfile=$(mktemp)
grep -v 'seg[0-9]\{1,\}\.[0-9]\{1\}' file_name > ${tmpfile}
cat ${tmpfile} > file_name
rm -f ${tmpfile}
like that, consider using mktemp to create the tmpfile but note that it's not POSIX.
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Python xml ElementTree from a string source?
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answered Mar 15 '09 at 1:36
Jim H.Jim H.
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Why are floating point numbers inaccurate?
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250
In most programming languages, floating point numbers are represented a lot like scientific nota...
Boolean vs tinyint(1) for boolean values in MySQL
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answered Sep 20 '10 at 13:26
Māris KiseļovsMāris Kiseļovs
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LINQ Distinct operator, ignore case?
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edited Jan 12 '09 at 7:38
answered Nov 12 '08 at 6:41
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Set background color of WPF Textbox in C# code
...sh(Colors.White);
textBox1.Background = new SolidColorBrush(Color.FromArgb(0xFF, 0xFF, 0, 0));
textBox1.Background = System.Windows.SystemColors.MenuHighlightBrush;
share
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adb update a non-market apk?
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answered Mar 10 '10 at 8:17
Vidar VestnesVidar Vestnes
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Byte[] to InputStream or OutputStream
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200
You create and use byte array I/O streams as follows:
byte[] source = ...;
ByteArrayInputStrea...
Case insensitive regex in JavaScript
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answered Oct 15 '10 at 5:40
Michał NiklasMichał Niklas
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Android: how to draw a border to a LinearLayout
...gt;
<corners
android:radius="2dp"
android:topRightRadius="0dp"
android:bottomRightRadius="0dp"
android:bottomLeftRadius="0dp" />
<stroke
android:width="1dp"
android:color="@android:color/white" />
</shape>
and define android:background="@dr...