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Gregg Leventhal
  • Member for 9 years
  • Last seen more than a month ago
86 votes
4 answers
300k views

Recursive grep vs find / -type f -exec grep {} \; Which is more efficient/faster?

54 votes
6 answers
83k views

Regex alternation/or operator (foo|bar) in GNU or BSD Sed

45 votes
6 answers
180k views

How to determine if NFS mount is mounted as v3 or v4?

39 votes
3 answers
28k views

Fork vs Clone on 2.6 Kernel Linux

31 votes
3 answers
6k views

What does 'exec {fd}</dev/watchdog' do in Bash

24 votes
3 answers
8k views

mv a file to /dev/null breaks dev/null

17 votes
2 answers
6k views

Negative lookbehind/ahead assertions in Linux less pager (or vim)

15 votes
3 answers
10k views

EXT3: If block size is 4K, why does ls -l show file sizes below that?

15 votes
2 answers
1k views

Open man page and search for string in a single command

14 votes
4 answers
982 views

Is this a typo in Bash manual's redirection section?

14 votes
3 answers
2k views

What happens when a file that is 100% paged in to the page cache gets modified by another process

13 votes
3 answers
19k views

Linux: difference between using autofs with NFS and just using fstab

12 votes
3 answers
38k views

Log all root activity with original username who su'd/sudoed to root

12 votes
2 answers
7k views

Difference between "bash executable" and "bash -c executable"

11 votes
4 answers
14k views

Is setting a higher nice level for a process an effective way to reduce its impact on system load/CPU time?

11 votes
2 answers
14k views

Crontab change MAILTO for only one specific job in Root's crontab

10 votes
1 answer
3k views

Bash capture any error like -e but don't exit, do something else

10 votes
4 answers
19k views

Split single string into character array using ONLY bash

9 votes
1 answer
26k views

Appending to same array in various loops, only last values remain Bash 4

9 votes
5 answers
16k views

Threads vs (Forked) Processes

8 votes
1 answer
720 views

Test -n gives unexpected result

7 votes
1 answer
15k views

Why is swap used when a lot of memory is still free? [duplicate]

7 votes
1 answer
914 views

What happens to requests to a service that is stopped with SIGSTOP

6 votes
2 answers
3k views

ext3 Filesystem shows full to most apps, but only 77% full to DF

6 votes
2 answers
6k views

Make script executable from vi/vim

5 votes
3 answers
685 views

Bash: handling "[[ statement ]] || echo problem found ; exit 1" logic

5 votes
1 answer
5k views

vim regex to search for lines containing string1 AND string2

5 votes
1 answer
7k views

I/O errors on Linux LVM

5 votes
2 answers
1k views

Nested POSIX groups in Linux [duplicate]

5 votes
2 answers
2k views

why doesn't 0 0 * * 1 root hostname >> /tmp/hostname.txt work as a crontab?