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Merge / convert multiple PDF files into one PDF
...ityLevel=1.4 -dPDFSETTINGS=/default -dNOPAUSE -dQUIET -dBATCH -dDetectDuplicateImages -dCompressFonts=true -r150 -sOutputFile=output.pdf input.pdf
cheers!!
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How to replace an entire line in a text file by line number
...script and had no problems:
#Create temporary file with new line in place
cat /dir/file | sed -e "s/the_original_line/the_new_line/" > /dir/temp_file
#Copy the new file over the original file
mv /dir/temp_file /dir/file
This doesn't go by line number, but you can easily switch to a line number...
Using CMake, how do I get verbose output from CTest?
...ile command, for example) with following contents
CTEST_CUSTOM_POST_TEST("cat Testing/Temporary/LastTest.log")
Instead of cat you may use whatever Windows cmd command that does similar things.
run make test again and get profit!
additional info about customizing ctest you can find here. Just...
How can I measure the actual memory usage of an application or process?
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With ps or similar tools you will only get the amount of memory pages allocated by that process. This number is correct, but:
does not reflect the actual amount of memory used by the application, only the amount of memory reserved for it
can be misleading if pages are shared, for example by sever...
Java inner class and static nested class
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From the Java Tutorial:
Nested classes are divided into two categories: static and non-static. Nested classes that are declared static are simply called static nested classes. Non-static nested classes are called inner classes.
Static nested classes are accessed using the enclosing...
How to save and load cookies using Python + Selenium WebDriver
...wer by @Eduard Florinescu but with newer code and missing import added:
$ cat work-auth.py
#!/usr/bin/python3
# Setup:
# sudo apt-get install chromium-chromedriver
# sudo -H python3 -m pip install selenium
import time
from selenium import webdriver
from selenium.webdriver.chrome.options import O...
How to import load a .sql or .csv file into SQLite?
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Try doing it from the command like:
cat dump.sql | sqlite3 database.db
This will obviously only work with SQL statements in dump.sql. I'm not sure how to import a CSV.
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How to set the context path of a web application in Tomcat 7.0
... ROOT but this is a terrible way to do it, IMHO. Now I checked out the tomcat doc & it says
13 Answers
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How to compile and run C/C++ in a Unix console/Mac terminal?
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All application execution in a Unix (Linux, Mac OS X, AIX, etc.) environment depends on the executable search path.
You can display this path in the terminal with this command:
echo $PATH
On Mac OS X (by default) this will di...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...查看该文件信息，具体信息如下：
[root@localhost mongodb]# cat students.dat
{ "_id" : { "$oid" : "5031143350f2481577ea81e5" }, "classid" : 1, "age" : 20, "name" : "kobe" }
{ "_id" : { "$oid" : "5031144a50f2481577ea81e6" }, "classid" : 1, "age" : 23, "name" : "nash" }
{ "_id" : { "...