In February 2013 Adobe donated the source code of the 1990 1.0.1 version of Photoshop to the Computer History Museum.

History

Tutorials

How to use Photoshop as a photo editor | Adobe Photoshop tutorials

Crop tool

straighten

Image -> Reveal All

Turn off Delete Cropped Pixels

改变图片大小

Menu -> Image -> Image Size… 勾选 Constrain Proportions

格式

*　　*　　*　　*　　*　　command
分　 时　 日　 月　 周　 命令

minute 0~59
hour 0~23
day 0~31
month 1~12
week 0~7，0或7代表星期日

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2
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5

* * * * *      每分钟
*/5 * * * *    每5分钟
0 * * * *      每小时
0 23 * * *     每天23:00
0 10,14,18,23 * * *    每天10:00, 14:00, 18:00, 23:00

创建

创建任务

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crontab -e

查看任务

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2

crontab -l
cat /etc/passwd | cut -f 1 -d : |xargs -I {} crontab -l -u {}

查看日志

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cat /var/log/cron

启动

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/sbin/service crond start
/sbin/service crond stop
/sbin/service crond restart

示例

基本

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* * * * * date >> date.txt

执行sh脚本

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*/30 * * * * /root/update-hexo.sh

#!/bin/bash

. /etc/profile
. ~/.bash_profile

hexo g

参考

Crontab in Linux with 20 Useful Examples to Schedule Jobs
Crontab error “/bin/sh: root: command not found”
Where can I set environment variables that crontab will use?

常见问题

单元格前的撇号（apostrophe）强制Excel把内容作为文本处理。

插入

• 上方或左侧插入空行或空列：Ctrl + Shift + +
• 删除行或列：Ctrl + -
• 左侧插入空白工作表：Shift + F11

删除空行

1. 选中列，Ctrl + G定位条件选择空值
2. 右键删除整行

隔行插入空行

拷贝内容至文本编辑器，正则表达式替换\n为\n\n

PivotTable

插入 -> 数据透视表

Create a PivotTable to analyze worksheet data

图标

插入 -> 推荐的图表

单元格下拉选择

数据 -> 数据校验 -> 序列 -> 逗号隔开

Saudi Arabian Oil Company (1933)

• 目前是世界上探明储量最大的石油公司，总部设在宰赫兰。公司拥有全世界最大的陆上油田——加瓦尔油田，以及最大的海上油田——赛法尼亚油田。
• 2019年12月，沙特阿美通过IPO筹集了256亿美元，创下史上金额最大IPO记录。

Terminology

Imprint

An imprint of a publisher is a trade name under which it publishes a work. A single publishing company may have multiple imprints, often using the different names as brands to market works to various demographic consumer segments.

Preprint

In academic publishing, a preprint is a version of a scholarly or scientific paper that precedes formal peer review and publication in a peer-reviewed scholarly or scientific journal. The preprint may be available, often as a non-typeset version available free, before or after a paper is published in a journal.

English language publishers

Penguin Random House (2013)

on July 1, 2013, from the merger of Penguin Group and Random House.

HarperCollins (1989)

Macmillan Publishers (1843)

It published two of the best-known works of Victorian era children’s literature, Lewis Carroll’s Alice’s Adventures in Wonderland (1865) and Rudyard Kipling’s The Jungle Book (1894).

Macmillan has been a wholly owned subsidiary of Holtzbrinck Publishing Group with offices in 41 countries worldwide and operations in more than thirty others.

Simon & Schuster (1924)

Hachette (1826)

—-

Springer Science+Business Media (1842)

施普林格是最大的书籍出版者，以及第二大世界性杂志出版者

Pearson plc (1844)

培生出版集团

Elsevier (1880)

爱思唯尔

Meredith Corporation (1902)

RELX (1993)

Low-cost, affordable, printed economically

New American Library (1948)

The New American Library (also known as NAL) is an American publisher based in New York, founded in 1948. Its initial focus was affordable paperback reprints of classics and scholarly works as well as popular and pulp fiction, but it now publishes trade and hardcover titles.

NAL enjoyed great success: by 1965, its Mentor and Signet books annually sold over 50 million volumes. In 1956 NAL reported that “over 3 million copies” of the Signet Books edition of From Here to Eternity had been sold.

Wordsworth Editions (1987)

Wordsworth Editions is a British publisher known for their low-cost editions of classic literature and non-fiction works.

The firm was founded by Michael Trayler in 1987. The firm began to sell paperbacks at £1 in 1992. The firm has approximately 500 titles in print. The firm is family-owned and based in Ware, Hertfordshire, England.

Dover Thrift Edition

Dover Thrift Editions are a series of paperback books published by Dover Publications starting in the 1990s. Thrift editions are printed economically and sold to consumers at a low price such as $1.00 to $2.50 in the United States, and £1.99 to £3.50 in the United Kingdom.