Home Operation and Maintenance Linux Operation and Maintenance In a Linux system, how to quickly query disk space usage without the duf command?

In a Linux system, how to quickly query disk space usage without the duf command?

Feb 26, 2024 pm 02:03 PM
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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。

  1. 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
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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。

  1. 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
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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。

  1. 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"
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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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