Answer Posted / souravpoddar

There is no simple command available to find out the largest files/directories on a Linux/UNIX/BSD filesystem. However, combination of following three commands (using pipes) you can easily find out list of largest files:

du command : Estimate file space usage.
sort command : Sort lines of text files or given input data.
head command : Output the first part of files i.e. to display first 10 largest file.
find command : Search file.
Type the following command at the shell prompt to find out top 10 largest file/directories:
# du -a /var | sort -n -r | head -n 10

Sample outputs:

1008372 /var
313236 /var/www
253964 /var/log
192544 /var/lib
152628 /var/spool
152508 /var/spool/squid
136524 /var/spool/squid/00
95736 /var/log/mrtg.log
74688 /var/log/squid
62544 /var/cache

Name the various commands that are used for the user information in unix.

543

---

Write a command to display a file’s contents in various formats?

629

---

How to display no of records in oracle using unix command?

591

---

How can we use grep command in unix?

621

---

What does pipe () return?

599

---

---

What are filter commands in unix?

555

---

Who command in unix?

579

---

how to sort the content of the file based on numeric values

1256

---

What is the behavioural difference between cmp and diff commands?

682

---

Why is it called grep?

565

---

What is the size of time_t?

655

---

What is {} in find command?

584

---

What are reported commands?

570

---

What is the command to compare two files in unix?

625

---

What are bash commands?

601

---