Eclipse can work well with Git. We discussed Configuring Eclipse to Highlight Changed Lines Compared to Git Commit before. Eclipse can also show the revision information for lines of code (from git blame) which is useful to understand why some lines are added in the context of previous revisions including the lines of code. Eclipse…
This is the release notes for linux release v0.95a (source code: linux-0.95a.tar.gz) with format adjusted by removing/replacing tabs/spaces/new lines. This notes document can give us an understanding of the early development of the Linux kernel. The the formatted version of the referenced RELNOTES-0.95 can be found at Release Notes For Linux v0.95. The original ASCII…
Eclipse is one of the good IDEs for C/C++ projects with its great source code indexer. It is common the source code version is controlled by some tools like Git for software projects. It is convenient if the IDE can show the current changes compared to the committed code version. In this post, we will…
Python is one of the most popular programming languages in the world. It is widely popular for a plethora of tasks due to its flexible nature and ease of use. Python has also managed to beat other programming languages such as Java, which were once upon a time, the world’s favorite. In fact, the extent…
It seems Thunderbird sends out my private/lan IP to the SMTP server. For example, in an Email sent out by Thunderbird, the header contains Received: from [192.168.1.2] (example.com [1.2.3.4]) by mail.example.com (Postfix) with ESMTPSA id 92CD297DEA; It is fine that the SMTP server records the public IP (1.2.3.4) as it is what it sees. But…
Evolution seems wrap long lines automatically in “Plain Text” mode. How to make Evolution not wrap lines in composed Emails? Evolution does not have (so far) “Flowing Text” mode where “the text is soft broken at the composer edge, but those soft breaks aren’t translated to hard breaks when the mail is sent” ( Reference:…
Does Evolution support automatic email address filling/completing in the “To” or “CC” fields which is commonly seen in other Email clients such as Thunderbird. Is is possible and how to enable Email address auto completion in Evolution? Evolution supports the contact autocompletion. To enable it, do as follows in Evolution. In Evolution Preferences dialog, in…
How to add a prefix string at the beginning of each line in Bash shell script on Linux? For example, assume we have a file a.txt: line 1 line 2 I want to have, pre line 1 pre line 2 You may use sed, the stream editor for filtering and transforming text: sed -e ‘s/^/pre…
How to change the maximum uploading size for PHP with Apache on Linux? PHP has parameters to control the maximum uploading size. Here, we use Ubuntu 18.04 LTS default version as an example. First, open the php.ini configuration file using your favorite editor /etc/php/7.2/apache2/php.ini Then, find the following parts ; Maximum size of POST data…
What is the best academic citation tool does anyone help? Here, we list 2 choices that are open source, or free, or have free plans. Zotero Zotero is open source and developed by an independent, nonprofit organization. Zotero can help you collect, organize, cite, and share research. Zotero can automatically senses research on the web….
Tab widths may be different for different languages. Even with a common language, the tab width settings can be different for different projects. In Vim, are there shortcuts to set tab widths to 2 and 4? To quickly change the tab widths when changing projects. I am afraid no. But you create shortcuts for setting…
In Vim, ’20G’ moves the cursor to line 20 in command mode. But how to move the cursor to a specific byte in Vim? In normal mode, 20go will move the cursor to byte 20. Or in command line, :goto 20 or :go 20 From vimdoc: :[range]go[to] [count] [count]go Go to {count} byte in the…
Search and replace in the whole text in Vim can be done by :%s/from/to/gc. But how to search and replace in visual selection only? The %V atom in Vim restricts a pattern so that it matches only inside the visual selection. So, your command for searching and replacing only in the visual selection can be…
crontab -e will start an editor to edit the crontab entries. But how to add a crontab entry from a shell script on Linux without interaction from users? You can try this piece of script: (crontab -l; echo “@reboot echo “rebooted””;) | crontab – Note that the update by this line of script is not…
On Linux, how to delete a specific line from a text file in command line? For example, to delete the 4th line from a file aaa bbb ccc ddd eee ffffff You can use the “stream editor for filtering and transforming text” sed. With GNU sed: sed -i ‘4d’ ./file Here, -i means edit the…
Which simple and basic image editors are good on Linux like the paint program on Windows? GIMP is great but too high weighted for normal usage like resizing, cropping, image annotation with text. Pinta is a free and open source drawing/editing program that is easy to edit images. It is available on many Linux distros….
How to make Thunderbird check for new messages in all IMAP folders? Under “Edit/Tools > Options > Advanced”, click the “Config Editor” button. In the config editor, set the mail.check_all_imap_folders_for_new configuration to “true“.
How to replacing a string with another string with newline in Emacs? For example, to replace: good editor with good editor: Emacs What you need is actually to input a newline in Emacs: C-q C-j C-q is for quoted-insert, and C-j is a newline (0xa).
How to make emacs remember last editing positions in files. It will be convenient next time I open the same file the cursor automatically moves to the position I was last time editing the same file. The behavior seems enabled by default in Vim. How to make Emacs do this? I use the saveplace mode….
How to Wrap and NOT Wrap Lines in vim? Make vim wrap lines: :set wrap For not wrap which will be useful when reading some data result such as logs: :set nowrap It can also be written into the .vimrc config files