diff --git a/cheatsheets/grep b/cheatsheets/grep
index 3a01723..fced336 100644
--- a/cheatsheets/grep
+++ b/cheatsheets/grep
@@ -20,3 +20,7 @@ grep -E "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}" file  #Find IP add
 # Find all files who contain {pattern} in the directory {directory}.
 # This will show: "file:line my research"
 grep -rnw 'directory' -e "pattern"
+
+# Exclude grep from your grepped output of ps.
+# Add [] to the first letter. Ex: sshd -> [s]shd
+ps aux | grep '[h]ttpd'
diff --git a/cheatsheets/ps b/cheatsheets/ps
index 3710a90..75d6155 100644
--- a/cheatsheets/ps
+++ b/cheatsheets/ps
@@ -9,3 +9,7 @@ ps -aufoouser
 
 # To list every process with a user-defined format:
 ps -eo pid,user,command
+
+# Exclude grep from your grepped output of ps.
+# Add [] to the first letter. Ex: sshd -> [s]shd
+ps aux | grep '[h]ttpd'
diff --git a/cheatsheets/xargs b/cheatsheets/xargs
new file mode 100644
index 0000000..44bf20a
--- /dev/null
+++ b/cheatsheets/xargs
@@ -0,0 +1,12 @@
+# find all file name ending with .pdf and remove them
+find -name *.pdf | xargs rm -rf
+
+# if file name contains spaces you should use this instead
+find -name *.pdf | xargs -I{} rm -rf '{}'
+
+# Will show every .pdf like:
+#	&toto.pdf=
+#	&titi.pdf=
+# -n1 => One file by one file. ( -n2 => 2 files by 2 files )
+
+find -name *.pdf | xargs -I{} -n1 echo '&{}='