Answer:

Assume you normally push your local changes to the remote's master branch, but what if you want to push the changes into another branch (e.g. testing)?

You can easily do this by using the command:

# git push origin master:testing

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2. Updating a local branch from the remote server using git
3. Merge changes from trunk into branch in SVN

Answer:

Usually when you want to count the number of lines contain a specific string, it is easy with the grep command,

e.g.

# cat input.txt | grep foo | wc -l

But actually a more direct approach would be:

# cat input.txt | grep -c foo

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1. Count the number of matching lines from grep
2. How to count the number of duplicated lines in a file
3. Count the total number of logged in user

Answer:

By default, if you have changed the file permission, git will also count the changes in file mode , e.g.

# git diff TEST.txt
diff --git a/TEST.txt b/TEST.txt
old mode 100644
new mode 100755

To ignore, simply type

# git config core.filemode false

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3. Adding the missing ignore function to Mercurial

Answer:

In our previous article, we learned how to move cursor to the end of line in VIM, so how about move to the start of the line?

The answer is simple:

0

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1. Move cursor to the end of the line in your shell
2. Move cursor to the start of the line in your shell
3. Move cursor to the end of line in VIM

Answer:

In our previous article we learned how to move cursor to the start of the line, so how about the end of the line?

Answer:

Ctrl + e

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1. Move cursor to the start of the line in your shell
2. Move cursor to the end of line in VIM
3. Quickly open to file and position a cursor with vim

Answer:

Assume you have typed a long command, how to move to the start of the line?

The answer is..

Ctrl + a

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1. Move cursor to the end of the line in your shell
2. Move cursor to the start of line in VIM
3. Move cursor to the end of line in VIM

Answer:

To completely turn off IPv6 support in Java, you can set the system property "java.net.preferIPv4Stack", e.g.

# java -Djava.net.preferIPv4Stack=true ...

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Answer:

To compress a directory and all the files under this directory to a zip file, you can use

# zip -r output.zip directory

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Answer:

Normally when you use the echo command to print a string, it will append a newline at the end of the string. To skip the newline, you can try using the "-n" argument.

# echo -n "hello"

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Answer:

To encrypt a string using AES256, you can use the openssl tool.

# echo -n 'apple' | openssl enc -aes256 -k password -nosalt -iv 0 -a -p

key=1F3870BE274F6C49B3E31A0C6728957F0628DEF3179C824405825F85F5527096
iv =00000000000000000000000000000000
PMcE/8RE+RLRlQWT5tlLWA==

No related posts.