


In a Linux system, how to quickly query disk space usage without the duf command?
在Linux系统中,使用 du 命令是一种常见的方法来查看磁盘空间使用情况。但是,在某些情况下,可能会遇到没有 du 命令的情况,那么我们可以通过其他方式来快速查看磁盘空间使用情况。本文将介绍一些替代方案,并提供具体的代码示例。
- 使用 df 命令
df 命令可以显示文件系统的磁盘空间使用情况。通过 df 命令,我们可以快速查看每个挂载点的空间使用情况。
示例代码:
df -h
以上命令将以人类可读的方式显示磁盘空间使用情况,包括文件系统、容量、已用空间、可用空间和挂载点等信息。
- 使用 ncdu 命令
ncdu 是一个针对磁盘空间占用情况的交互式工具,可以帮助用户快速查看不同目录和文件的空间占用情况。
示例代码:
# 安装 ncdu sudo apt install ncdu # 运行 ncdu ncdu
通过以上代码示例安装并运行 ncdu,您可以交互式地浏览文件系统并查看每个目录的空间使用情况。
- 使用 du 命令的替代方法
如果没有 du 命令,也可以通过其他方式实现类似的功能。下面是一个示例脚本,可以用于计算指定目录的总空间使用情况:
#!/bin/bash total=0 function calculate_size { for item in $(ls $1) do if [ -d $1/$item ]; then calculate_size $1/$item else size=$(stat -c %s $1/$item 2>/dev/null) let total+=size fi done } calculate_size "/path/to/directory" echo "Total space used: $total bytes"
您可以将以上代码保存为一个脚本文件,并将 "/path/to/directory" 替换为您要统计空间使用情况的目录。运行脚本后,将输出该目录下所有文件的总空间使用情况。
总之,虽然没有 du 命令可能会让我们感到困惑,但是通过 df 命令、ncdu 工具或自定义脚本,我们仍然可以快速而准确地查看磁盘空间的使用情况。
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