In *nix, how do I display (cat) a file with no line-wrapping: longer lines should be cut such that they fit into screen's width.
在* nix中，如何显示（cat）没有换行的文件：应该剪切较长的行以使它们适合屏幕的宽度。
5 个解决方案
#1
19
Note that cut accepts a filename as an argument.
请注意，cut接受文件名作为参数。
This seems to work for me:
这似乎对我有用：
watch 'bash -c "cut -c -$COLUMNS file"'
For testing, I added a right margin:
为了测试，我添加了一个右边距：
watch 'bash -c "cut -c -$(($COLUMNS-10)) file"'
When I resized my terminal, the truncation was updated to match.
当我调整终端大小时，截断更新以匹配。
#2
35
You may be looking for fmt:
您可能正在寻找fmt：
fmt file
This pretty aggressively reformats your text, so it may do more than what you want.
这非常积极地重新格式化您的文本，因此它可能比您想要的更多。
Alternatively, the cut command can cut text to a specific column width, discarding text beyond the right margin:
或者，cut命令可以将文本剪切为特定的列宽，丢弃右边距之外的文本：
cat file | cut -c1-80
Another handy option is the less -S command, which displays a file in a full screen window with left/right scrolling for long lines:
另一个方便的选项是less -S命令，它在一个全屏窗口中显示一个文件，左/右滚动为长行：
less -S file
#3
5
as stated by others, the answer is cut -c ..., but to add some dynamic to it, I prefer this:
正如其他人所说，答案是剪切-c ...，但为了增加一些动态，我更喜欢这个：
cat file.txt |cut -c -$(tput cols)
cat file.txt | cut -c - $（tput cols）
#4
2
to toggle long-line-wrap in less. Default is to wrap.
用较少的方式切换长线包装。默认是换行。
- `less file`
- in file type `"-S"` to toggle to truncate on line width
- to toggle back `"-S"` again.
#5
2
The use of cut does not take into account that tabs are considered a single character \t but they are printed as 8 blank spaces. Thus a file with tabs will be cut at different perceived columns.
剪切的使用不考虑标签被视为单个字符\ t但它们被打印为8个空格。因此，具有标签的文件将在不同的感知列处被剪切。
less -S truncates optimally the text, also in the presence of tabs, but AFAIK it cannot be used to non-interactively print the "chopped" file.
less -S最佳地截断文本，也存在标签，但AFAIK它不能用于非交互式打印“切碎”文件。
A working solution is to convert tabs into spaces through expand and then cut the output: expand < file | cut -c -$(tput cols)
一个有效的解决方案是通过展开将标签转换为空格，然后剪切输出：expand
#1
19
Note that cut accepts a filename as an argument.
请注意，cut接受文件名作为参数。
This seems to work for me:
这似乎对我有用：
watch 'bash -c "cut -c -$COLUMNS file"'
For testing, I added a right margin:
为了测试，我添加了一个右边距：
watch 'bash -c "cut -c -$(($COLUMNS-10)) file"'
When I resized my terminal, the truncation was updated to match.
当我调整终端大小时，截断更新以匹配。
#2
35
You may be looking for fmt:
您可能正在寻找fmt：
fmt file
This pretty aggressively reformats your text, so it may do more than what you want.
这非常积极地重新格式化您的文本，因此它可能比您想要的更多。
Alternatively, the cut command can cut text to a specific column width, discarding text beyond the right margin:
或者，cut命令可以将文本剪切为特定的列宽，丢弃右边距之外的文本：
cat file | cut -c1-80
Another handy option is the less -S command, which displays a file in a full screen window with left/right scrolling for long lines:
另一个方便的选项是less -S命令，它在一个全屏窗口中显示一个文件，左/右滚动为长行：
less -S file
#3
5
as stated by others, the answer is cut -c ..., but to add some dynamic to it, I prefer this:
正如其他人所说，答案是剪切-c ...，但为了增加一些动态，我更喜欢这个：
cat file.txt |cut -c -$(tput cols)
cat file.txt | cut -c - $（tput cols）
#4
2
to toggle long-line-wrap in less. Default is to wrap.
用较少的方式切换长线包装。默认是换行。
- `less file`
- in file type `"-S"` to toggle to truncate on line width
- to toggle back `"-S"` again.
#5
2
The use of cut does not take into account that tabs are considered a single character \t but they are printed as 8 blank spaces. Thus a file with tabs will be cut at different perceived columns.
剪切的使用不考虑标签被视为单个字符\ t但它们被打印为8个空格。因此，具有标签的文件将在不同的感知列处被剪切。
less -S truncates optimally the text, also in the presence of tabs, but AFAIK it cannot be used to non-interactively print the "chopped" file.
less -S最佳地截断文本，也存在标签，但AFAIK它不能用于非交互式打印“切碎”文件。
A working solution is to convert tabs into spaces through expand and then cut the output: expand < file | cut -c -$(tput cols)
一个有效的解决方案是通过展开将标签转换为空格，然后剪切输出：expand