alias

Mercurial: alias with arguments

由 丶灬走出姿态 提交于 2020-01-03 20:56:17
问题 I want to create an alias so that when I run: hg pushbranch <<SOME_BRANCH>> it aliases to: hg push -b <<SOME_BRANCH>> Where SOME_BRANCH is the name of a branch I wish to push. I can create an alias in my .hgrc , but don't know how I could supply an argument to the alias. 回答1: From the hgrc help Positional arguments in the form of $1, $2, etc in the alias definition are expanded by Mercurial before execution. Thus, your alias definition, which will allow to push any branch, will be pushbranch

Is it always a good practice to use aliases in sql joins or nested queries?

由 ☆樱花仙子☆ 提交于 2020-01-03 08:42:09
问题 Is it always a best practice to use - Select E.Id,D.DeptName from Employee E join Dept D on E.DeptId=D.Id instead of - Select Employee.Id,Dept.DeptName from Employee join Dept on Employee.DeptId=Dept.Id Other than readability and reducing length of the query what are benefits of using aliases ? When I consulted with our Database expert he says query may break if there are no aliases at times...which I dont understand completely...I would appreciate if anyone would share their thoughts and

Linux给命令设置别名

由 馋奶兔 提交于 2020-01-03 05:19:20
转载自：https://www.cnblogs.com/chenqionghe/p/4583812.html查看命令别名：alias 1 alias 设置命令别名：alias 别名='命令' 1 alias ll= 'ls -l' 取消命令别名：unalias 别名 1 unalias ll 命令永久生效 上面直接在shell里设定的命令别名，在终端关闭或者系统重新启动后都会失效，如何才能永久有效呢？办法就是将别名的设置加入~/.bashrc文件，然后重新载入下文件就可以了。~代表用户home目录 1 vim ~/.bashrc 在文件最后面加入别名设置，如：alias ll=’ls-l’，保存后重新载入： 1 source ~/.bashrc 这样就可以永久保存命令的别名了。因为修改的是当前用户目录下的.bashrc文件，所以这样的方式只对当前用户有用。如果要对所有用户都有效，修改/etc目录下的bashrc文件就可以了。 来源： https://www.cnblogs.com/acm-icpcer/p/11943335.html

Linux给命令设置别名

由 孤人 提交于 2020-01-03 05:18:57
查看命令别名：alias alias 设置命令别名：alias 别名='命令' alias ll='ls -l' 取消命令别名：unalias 别名 unalias ll 命令永久生效 上面直接在shell里设定的命令别名，在终端关闭或者系统重新启动后都会失效，如何才能永久有效呢？办法就是将别名的设置加入~/.bashrc文件，然后重新载入下文件就可以了。~代表用户home目录 vim ~/.bashrc 在文件最后面加入别名设置，如：alias ll=’ls-l’，保存后重新载入： source ~/.bashrc 这样就可以永久保存命令的别名了。因为修改的是当前用户目录下的.bashrc文件，所以这样的方式只对当前用户有用。如果要对所有用户都有效，修改/etc目录下的bashrc文件就可以了。 来源： https://www.cnblogs.com/chenqionghe/p/4583812.html

【Linux】别名

由 大兔子大兔子 提交于 2020-01-03 05:18:34
别名就是一种快捷方式，以省去用户输入一长串命令的麻烦。 别名有多种实现方式，可以使用函数，也可以使用alias命令 注意：alias命令的作用只是短暂的。一旦终端关闭，别名则失效，如果要让别名永久生效，需要添加到~/.bashrc 案例 1.建立 一个别名pl,使用该别名可以ping本地 [root@localhost test]# alias pl='ping localhost' [root@localhost test]# pl PING localhost (127.0.0.1) 56(84) bytes of data. 64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.400 ms 64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.375 ms 64 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=64 time=0.465 ms 64 bytes from localhost (127.0.0.1): icmp_seq=4 ttl=64 time=0.362 ms 64 bytes from localhost (127.0.0.1): icmp_seq=5 ttl=64

Is there a way to create an alias to a cmdlet in a way that it only runs if arguments are passed to the alias?

由 a 夏天 提交于 2020-01-01 17:11:48
问题 I am trying to create an alias (named which ) of the Get-Command cmdlet in a way that it doesn't run if I'm not sending any arguments (because if it's run without arguments it outputs all the commands that are available). I know this can be done using a function but I would like to keep the tab completion functionality without having to write a sizeable function that is to be placed into my $PROFILE. In short, I only want the alias to work if it is being passed arguments. 回答1: You can't do it

Is there a way to create an alias to a cmdlet in a way that it only runs if arguments are passed to the alias?

由 谁说胖子不能爱 提交于 2020-01-01 17:11:28
问题 I am trying to create an alias (named which ) of the Get-Command cmdlet in a way that it doesn't run if I'm not sending any arguments (because if it's run without arguments it outputs all the commands that are available). I know this can be done using a function but I would like to keep the tab completion functionality without having to write a sizeable function that is to be placed into my $PROFILE. In short, I only want the alias to work if it is being passed arguments. 回答1: You can't do it

linux基础学习-7.5-基础命令(2)

由 ＊爱你＆永不变心＊ 提交于 2019-12-31 22:55:43
1、sed 三剑客老二 擅长取行 查找替换 参数 -n '从哪里来,到哪里去p' 取消默认输出 -i 修改文件内容 sg 查找替换 s查找 g全局/全部查找替换 -n 取消默认输出 sed默认输出整个文件的内容 例子： sed -n '20,30p' ett.txt find /oldboy/ -type f -name "*.sh"|xargs sed -i 's#oldboy#oldgirl#g' 2、awk 三剑客老大 擅长取列 参数： NR 表示行号 && 并且 数字 取文件中的第几列 ＄0 取出文件的第一整行 $NF 取出最后一列 -F "[ ,]" 指定菜刀 空格或者逗号（,） awk 默认的菜刀是空格或连续的空格 tab符号 例子： awk ‘NR<=30’/data/ett.txt awk ‘NR<=30 && NR>=20’/data/ett.txt awk '{print NR,$0}' nginx.conf $0 显示第一列 [root@oldboy35-moban data]# awk '{print NR,$0}' nginx.conf 1 std1 2 std2 3 std3 4 std4 5 std5 [root@oldboyedu oldboy]# awk -F "[ ,]" '{print $3,$NF}' oldboy.txt oldboy

How do I set default aliases or other configuration for my git repository?

由 无人久伴 提交于 2019-12-31 04:31:06
问题 I'd like to set some default aliases and other configuration for a git repository, so that when new users clone it they have those aliases immediately available for them in that project. I.e., I would like to do: git clone <remote-repo> And then end up with a .git/config which has some preset aliases in it, such as: [alias] st = status I was thinking I could edit .git/config in the remote repository, but that doesn't work. Is there any way I can make this happen? 回答1: You can not do that

Git Alias(git快捷命令别名设置)

由 廉价感情. 提交于 2019-12-31 02:33:31
在用户文件夹新建 .bash_profile 文件，编辑如下内容保存。即可享受Git快捷命令 alias gpm='git push origin master' alias ...=../.. alias ....=../../.. alias .....=../../../.. alias ......=../../../../.. alias 1='cd -' alias 2='cd -2' alias 3='cd -3' alias 4='cd -4' alias 5='cd -5' alias 6='cd -6' alias 7='cd -7' alias 8='cd -8' alias 9='cd -9' alias _=sudo alias afind='ack -il' alias d='dirs -v | head -10' alias g=git alias ga='git add' alias gaa='git add --all' alias gapa='git add --patch' alias gau='git add --update' alias gb='git branch' alias gba='git branch -a' alias gbd='git branch -d' alias gbda='git branch --no-color
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