alias

问题 I recently learned about the builtin variable _ in the python shell, the purpose of which is to store the last console answer. For example: >>> 4 + 7 11 >>> _ 11 >>> Test = 4 >>> Test + 3 7 >>> _ 7 Being a longtime TI-Basic programmer, I'm far more comfortable with thinking of this variable as Ans instead of _ . (Yes, I know it's merely personal preference, but it's an interesting question in any case.) Question: How do I set up my Ans variable so that its value is always the same as the _

问题 I recently learned about the builtin variable _ in the python shell, the purpose of which is to store the last console answer. For example: >>> 4 + 7 11 >>> _ 11 >>> Test = 4 >>> Test + 3 7 >>> _ 7 Being a longtime TI-Basic programmer, I'm far more comfortable with thinking of this variable as Ans instead of _ . (Yes, I know it's merely personal preference, but it's an interesting question in any case.) Question: How do I set up my Ans variable so that its value is always the same as the _

问题 I have the following command that I am trying to put into a bash alias. The command by itself works fine, but when I try to alias it, I am getting the following errors: The Command find . -maxdepth 1 -mindepth 1 -type d -exec sh -c 'echo "$(find "{}" -type f | wc -l)" {}' \; | sort -nr The Alias alias csfiles='find . -maxdepth 1 -mindepth 1 -type d -exec sh -c 'echo "$(find "{}" -type f | wc -l)" {}' \; | sort -nr' The Error: -sh: alias 0: not found -sh: alias {} \; | sort nr: not found I

问题 I have this table sales(productid, sales_date) I want to get the monthly sales count for last 12 month. How can I generate the month name on the column alias (without hard coding)? I tried this :- http://sqlfiddle.com/#!2/ee777/9 But I want the result table in this format productid Oct-12 Nov-12 Dec-12 Jan-13 Feb-13 Mar-13 Apr-13 May-13 1 0 0 3 4 2 8 2 11 2 0 5 6 8 2 0 0 0 I tried to give the column alias using function DATE_FORMAT(sales_date, '%M') but it is syntax error. select productid

问题 I have this table sales(productid, sales_date) I want to get the monthly sales count for last 12 month. How can I generate the month name on the column alias (without hard coding)? I tried this :- http://sqlfiddle.com/#!2/ee777/9 But I want the result table in this format productid Oct-12 Nov-12 Dec-12 Jan-13 Feb-13 Mar-13 Apr-13 May-13 1 0 0 3 4 2 8 2 11 2 0 5 6 8 2 0 0 0 I tried to give the column alias using function DATE_FORMAT(sales_date, '%M') but it is syntax error. select productid

问题 Suppose I have the following branches in git: master release-2014-11-02-some-long-text I would like to easily switch between those to, like this: git checkout devel # checkout to master git checkout release # checkout to the branch release currently points/aliases to, in this case: release-2014-11-02-some-long-text (I would like to change this alias from time to time) How can I do that in Git? 回答1: You can try using git symbolic-ref (as mentioned in "Is it possible to alias a branch in Git?")

问题 I've implemented a Git command and used git aliases to hook it into Git but is there a way to hook the Git help? I'm running on Windows and if I issue git help mycmd I get a popup telling me that Git can't find a git-mycmnd.html file. I've implemented my command using Python so is there a proper Git-ish way to add the help in, other than 'just knowing' where help files have to be placed? 回答1: You can have customised documentation for for your aliases, and the documentation can be either

问题 I'm a seasoned C# programmer, but so far, I have only barely dabbled in PowerShell (having used another alternate Windows command line product so far). I'm trying to automate some Git stuff, and I've run into some difficulties and can't seem to find any solution to these... (and no video tutorial or blog post seems to have helped much so far, either). What I'm trying to do is define functions and aliases that make my work with Git in PowerShell more comfortable - and yes, I know about Posh

问题 I'm on Mac OSX and trying to put some basic aliases in .bashrc (e.g. alias ll = 'ls -l' ). I sourced .bashrc in .bash_profile, and on startup it recognizes a function that I have in .bashrc. However, I get the following error messages every time I add an alias and then try to start it up: -bash: alias: ll: not found -bash: alias: =: not found -bash: alias: ls -l: not found The ll alias does not work, but the command declared by the following function does: #!/bin/bash # prints the input

问题 I'm on Mac OSX and trying to put some basic aliases in .bashrc (e.g. alias ll = 'ls -l' ). I sourced .bashrc in .bash_profile, and on startup it recognizes a function that I have in .bashrc. However, I get the following error messages every time I add an alias and then try to start it up: -bash: alias: ll: not found -bash: alias: =: not found -bash: alias: ls -l: not found The ll alias does not work, but the command declared by the following function does: #!/bin/bash # prints the input