fix

README.md

@@ -1,5 +1,5 @@
 🌍
-*[Čeština](README-cs.md) ∙ [English](README.md) ∙ [Español](README-es.md) ∙ [Italiano](README-it.md) ∙ [日本語](README-ja.md) ∙ [한국어](README-ko.md) ∙ [Português](README-pt.md) ∙ [Русский](README-ru.md) ∙ [Slovenščina](README-sl.md) ∙ [Українська](README-uk.md) ∙ [中文](README-zh.md) ∙ [繁體中文](README-zh-Hant.md)*
+*[Čeština](README-cs.md) ∙ [English](README.md) ∙ [Español](README-es.md) ∙ [Français](README-fr.md) ∙ [Italiano](README-it.md) ∙ [日本語](README-ja.md) ∙ [한국어](README-ko.md) ∙ [Português](README-pt.md) ∙ [Русский](README-ru.md) ∙ [Slovenščina](README-sl.md) ∙ [Українська](README-uk.md) ∙ [中文](README-zh.md) ∙ [繁體中文](README-zh-Hant.md)*
 
 
 # The Art of Command Line
@@ -93,6 +93,7 @@ Notes:
       cat hosts | xargs -I{} ssh root@{} hostname
 ```
 
+
 - `pstree -p` is a helpful display of the process tree.
 
 - Use `pgrep` and `pkill` to find or signal processes by name (`-f` is helpful).
@@ -109,6 +110,8 @@ Notes:
 
 - Use `alias` to create shortcuts for commonly used commands. For example, `alias ll='ls -latr'` creates a new alias `ll`.
 
+- Understand that care is needed when variables and filenames include whitespace. Surround your Bash variables with quotes, e.g. `"$FOO"`. Prefer the `-0` or `-print0` options to enable null characters to delimit filenames, e.g. `locate -0 pattern | xargs -0 ls -al` or `find / -print0 -type d | xargs -0 ls -al`. To iterate on filenames containing whitespace in a for loop, set your IFS to to be a newline only using `IFS=$'\n'`.
+
 - In Bash scripts, use `set -x` (or the variant `set -v`, which logs raw input, including unexpanded variables and comments) for debugging output. Use strict modes unless you have a good reason not to: Use `set -e` to abort on errors (nonzero exit code). Use `set -u` to detect unset variable usages. Consider `set -o pipefail` too, to on errors within pipes, too (though read up on it more if you do, as this topic is a bit subtle). For more involved scripts, also use `trap` on EXIT or ERR. A useful habit is to start a script like this, which will make it detect and abort on common errors and print a message:
 ```bash
       set -euo pipefail
@@ -477,7 +480,7 @@ A few examples of piecing together commands:
 
 - `lsb_release`: Linux distribution info
 
-- `lsblk`: list block devices: a tree view of your disks and disk paritions
+- `lsblk`: list block devices: a tree view of your disks and disk partitions
 
 - `lshw`, `lscpu`, `lspci`, `lsusb`, `dmidecode`: hardware information, including CPU, BIOS, RAID, graphics, devices, etc.