我使用以下方法创建python虚拟环境:
python3 -m venv venv3
要激活,我source venv3/bin/activate。
venv3/bin/activate似乎并没有那么复杂:
# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly
deactivate () {
# reset old environment variables
if [ -n "$_OLD_VIRTUAL_PATH"
我升级到Linux 21 (基于Ubuntu 22),有许多小问题,其中一个问题在VS代码中,而不是在终端(gnome-终端)中,运行ls 别名:
bash: printf:‘y’:无效格式字符
虽然我已经定义了这些别名:
# Base `ls` alias contains:
# - escape for it could be defined already
# - use colors when appropriate
# - group directories first
# - date format YYYY-Mmm-DD
alias ls="\ls --color=aut
我正在查看virtualenv的源代码,激活脚本包含以下代码:
if [ -z "$VIRTUAL_ENV_DISABLE_PROMPT" ] ; then
_OLD_VIRTUAL_PS1="$PS1"
if [ "x" != x ] ; then
PS1="$PS1"
else
if [ "`basename \"$VIRTUAL_ENV\"`" = "__" ] ; then
# special ca
我正在学习一书“开始Linux编程第四版”,第二章是关于shell编程的。第53页的例子给我留下了深刻的印象,我试着开发一个脚本来显示更多的内容。这是我的代码:
enter code here
#!/bin/bash
var1=10
var2=20
var3=30
var4=40
for i in 1 2 3 4 # This works as intended!
do
x=var$i
y=$(($x))
echo $x = $y # But we can avoid declaring extra parameters x and y, see next line
我有一个脚本(不是我自己写的),它在我的命令提示符中显示git branch/svn分支。有人知道为什么这在mac上不起作用吗?它在linux中工作得很好。
来自
# Display ps1 with colorful pwd and git status
# Acording to Jimmyxu .bashrc
# Modified by Ranmocy
# --
if type -P tput &>/dev/null && tput setaf 1 &>/dev/null; then
color_prompt=yes
else
我对canvas fillText函数有问题。我有这样的代码:
scene.shapes['shop1'] = new Shape();
var ps1 = scene.shapes['shop1'].points; // for convenience
ps1[0] = new Point(1024, 66, 10); // left bottom
ps1[1] = new Point(694, 66, 10); // right bottom
ps1[2] = new
我试图通过Putty访问Linux服务器,但由于某种原因,在某种程度上成功登录后,它只是抛出一个"/bin/bash没有这样的文件或目录“,然后Putty关闭。
bashrc的内容:
# /etc/bashrc
# System wide functions and aliases
# Environment stuff goes in /etc/profile
# By default, we want this to get set.
# Even for non-interactive, non-login shells.
if [ $UID -gt 99 ] &&a
我注意到在~/.bashrc中有两组PS1
if [ "$color_prompt" = yes ]; then
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$'
fi
unset color_prompt force_color_prompt
# If th