在Shell或Bash中,我们可以使用if语句结合test或[ ]来检查文件是否存在。下面是一个示例代码片段: if [ -e /path/to/file.txt ] then echo "File exists" else echo "File does not exist" fi 复制 在上面的代码中,-e选项用于检查文件是否存在。如果文件存在,则输出File exists;否则输出File does not exi...
📅 最后修改于: 2022-03-11 14:50:26.409000 🧑 作者: Mango unix 打印环境变量 - Shell-Bash 代码示例 安装Postfix 以发送通知电子邮件 - Shell-Bash 代码示例 代码示例2 FILE=/etc/resolv.conf if [[ -f "$FILE" ]]; then echo "$FILE exists." fi...
short circuit evaluation: && 和 || [[-e "$filename"]]&&echo "file exists"||echo "file does not exist" 这和python的if else挺像 这就不像了 Exit Status The exit status of an executed command is the value returned by the `waitpid system call` or equivalent function. Exit statuses fall...
If a compiled file exists (named for the original file plus the .zwc extension) and it is newer than the original file, the compiled file will be used instead. FILES $ZDOTDIR/.zshenv $ZDOTDIR/.zprofile $ZDOTDIR/.zshrc $ZDOTDIR/.zlogin $ZDOTDIR/.zlogout ${TMPPREFIX}* (default...
-f "$HOME/.z" ] && touch "$HOME/.z" URL="http://git.io/antigen" TMPFILE="/tmp/antigen.zsh" if [ -x "$(which curl)" ]; then curl -L "$URL" -o "$TMPFILE" elif [ -x "$(which wget)" ]; then wget "$URL" -O "$TMPFILE" else echo "ERROR: please install curl or...
安装了oh-my-zsh之后conda命令在终端中不可用。 二、原因分析 终端中zsh的可访问的程序一般放在/bin, /usr/bin, /usr/local/bin,~/bin目录下;而最新安装的Anaconda会默认安装在/Users/username下或者/Users/username/opt下,导致环境变量没有写入到终端配置文件。笔者的Anaconda默认被安装在了~/opt目录下,直接采用...
所以我的函数是这样的: h() { if [ -z "$*" ] then history 1 else history 1 | egrep "$@" fi } 不幸的是,这只会导致以下错误消息: $ h ls egrep: ls: No such file or directory 我不知道我的剧本出了什么问题。我试过grep和egrep都没有用。 浏览9提问于2014-01-17得票数 1 回答已采纳...
If~/.zshrc.pre-oh-my-zshexists, back it up to~/.zshrc.pre-oh-my-zsh-<current-datetime>, where<current-datetime>is in the formatYYYY-mm-dd_HH-MM-SS.If this destination file exists, the installer is aborted. After~/.zshrc.pre-oh-my-zshis backed up, back up the existing.zshrcfile...
zsh: permission denied: npm#13861 tyduptyler13opened this issueMar 24, 2015· 7 comments tyduptyler13commentedMar 24, 2015 After installing the latest build of nodejs, npm no longer works due to what appears to be a permission issue. zsh seems to know the file exists on the path but ...
cd ~ | ls -a touch .zshrc // if file .zshrc doesn't exists we create it vim .zshrc Paste PATH=/opt/homebrew/bin:$PATH there, save file and restart terminal. Vim helper: 1. press "i" to interactive mode in vim, paste: export PATH=/opt/homebrew/bin:$PATH 2. press "esc" ...