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What is a unix command for deleting the first N characters of a line?
For example, I might want to:
6 Answers
6
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Awk学习笔记awk是一种编程语言，用于在linux unix下对文本和数据进行处理。数据可以来自标准输入、一个或多个文件，或其它命令的输出。它支持用户自定义函数和动态正则表达式等先进功能，是linux unix下的一个强大编程工具。
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Strengths of Shell Scripting compared to Python [closed]
...g reuses entire programs.
Shell is universally available (on anything like Unix) - Python is not necessarily installed.
'Tis true that you can do everything in Python that you can do in shell; 'tis also true that there are things that are easy in Python that are hard in shell (just as there are th...
Pipe output and capture exit status in Bash
...There is a good explanation with examples of PIPESTATUS AND Pipefail here: unix.stackexchange.com/a/73180/7453.
– slm
Apr 21 '13 at 14:01
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Exit codes in Python
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Not sure at all. In Unix/Linux, the standard is: exit 0 in the case everything was ok. Type a command, then echo $?: if you read 0, it returned without an error. The idea is to have standard tests. If the code xyz.py did not encounter any error,...
Install tkinter for Python
... .tar.gz files for tcl and tk. Then open up the readme files inside the ./unix directory. I ran
cd ~/tcl8.5.11/unix
./configure --prefix=/home/cnel711 --exec-prefix=/home/cnel711
make
make install
cd ~/tk8.5.11/unix
./configure --prefix=/home/cnel711 --exec-prefix=/home/cnel711 --with-tcl=/home/...
How to mkdir only if a directory does not already exist?
...arents as a more readable alias, but this is not specified in POSIX/Single Unix Specification and not available on many common platforms like macOS, various BSDs, and various commercial Unixes, so it should be avoided.
If you want an error when parent directories don't exist, and want to create the...
How to make a Python script run like a service or daemon in Linux
...e
def daemonize(self):
"""
do the UNIX double-fork magic, see Stevens' "Advanced
Programming in the UNIX Environment" for details (ISBN 0201563177)
http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
"""
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How can I shuffle the lines of a text file on the Unix command line or in a shell script?
I want to shuffle the lines of a text file randomly and create a new file. The file may have several thousands of lines.
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docker error: /var/run/docker.sock: no such file or directory
...014/08/19 11:11:45 Get http:///var/run/docker.sock/v1.13/images/json: dial unix /var/run/docker.sock: no such file or directory. Should the docker be placed in the home directory and can it be named with any name? Is it the same as "image-name"?
– user1189851
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