added new one-liners

- signed-off-by: trimstray <trimstray@gmail.com>

README.md

@@ -1328,6 +1328,12 @@ awk '{ if($7 > 1048576) print $7/1048576 "MB" " " $9 " " $1 }' | \
 sort -n -u | tail | column -t
 ```
 
+###### Get the path of a process
+
+```bash
+lsof -p <PID> | grep cwd
+```
+
 ___
 
 ##### Tool: [ps](https://en.wikipedia.org/wiki/Ps_(Unix))
@@ -1344,6 +1350,12 @@ ps awwfux | less -S
 ps hax -o user | sort | uniq -c | sort -r
 ```
 
+###### Show all processes by name with ps main header
+
+```bash
+ps -lfC nginx
+```
+
 ___
 
 ##### Tool: [find](https://en.wikipedia.org/wiki/Find_(Unix))
@@ -1993,6 +2005,15 @@ exec /sbin/init 6
 exec /sbin/init
 ```
 
+###### Get the path of a process
+
+```bash
+# Alternatives:
+#   - pwdx command
+#   - lsof command
+readlink -f /proc/<PID>/exe
+```
+
 ##### Tool: [curl](https://curl.haxx.se)
 
 ```bash