python函数 系列目录:python函数——目录 --- 常用封装借口 接口1 import os def create_dirs(dirs): try: for dir_ in...}".format(err)) exit(-1) 接口2 def mkdir_if_not_exist(dir_name, is_delete=False): """ 创建文件夹...if os.path.exists(dir_name): shutil.rmtree(dir_name) print...
if [ -e /path/to/file ]; then echo "File exists." else echo "File does not exist." fi 3. 使用 stat 命令 stat命令可以提供文件的详细信息,如果文件存在,它会显示相关信息。 代码语言:txt 复制 stat /path/to/file 4. 编程语言中的检查 如果你是通过编程方式创建文件,可以在创建后进行检查。 Pyt...
$cp$HOME/.vimrc /tmp/test/one/non-exist/backup/dir/myVimrccp: cannot create regular file'/tmp/test/one/non-exist/backup/dir/myVimrc': No such file or directory In the example above, we attempted to copy the.vimrcfile from the current user’s home directory to a target directory/tm...
Main operation mode: -A, --catenate, --concatenate append tar files to an archive -c, --create create a new archive -d, --diff, --compare find differences between archive and file system --delete delete from the archive (not on mag tapes!) -r, --append append files to the end of...
cert::backup_file() {local file=${1}if [[ ! -e ${file}.old-$(date +%Y%m%d) ]]; thencp -rp "${file}" "${file}.old-$(date +%Y%m%d)"log::info "backup ${file} to ${file}.old-$(date +%Y%m%d)"elselog::warning "does not backup, ${file}.old-$(date +%Y%m%d) ...
下面是一个完整的示例代码,演示了如何使用open函数和exists函数来创建空文件: importosdefcreate_empty_file(filename):ifnotos.path.exists(filename):withopen(filename,"w")asfile:passfilename="test.txt"create_empty_file(filename) 1. 2. 3. ...
[root@testserver linuxStudy]#mkdirdir1mkdir: cannot create directory `dir1': File exists 例4.-p参数,创建多层目录dir4/dir5(dir4目录不存在时,同时创建dir4、dir5目录;dir4目录存在时,则只创建dir5目录) [root@testserver linuxStudy]#mkdirdir4/dir5 #未加-p参数,上层目录不存在时,创建目录失败mkdi...
# 基础使用 ubuntu@VM-8-8-ubuntu:/tmp$ cheat cp # To copy a file: cp ~/Desktop/foo.txt ~/Downloads/foo.txt # To copy a directory: cp -r ~/Desktop/cruise_pics/ ~/Pictures/ # To create a copy but ask to overwrite if the destination file already exists: cp -i ~/Desktop/foo....
--if-not-exists \ rhel \ https://flatpaks.redhat.io/rhel.flatpakrepo 登录到 red hat container catalog: copy to clipboard copied! toggle word wrap toggle overflow podman login registry.redhat.io $ podman login registry.redhat.io username: your-user-na...
elastic hard nofile 262144 elastic soft nofile 262144 elastic memlock unlimited elastic fsize unlimited elastic as unlimited 1 2 3 4 5 6 7 elastic:代码启动Elasticsearch集群的用户 5.2、更改一个进程能拥有的最大内存区域限制 vi /etc/sysctl.conf ...