Comments on: 10 Linux commands you’ve never used

By: anonyuser

anonyuser — Sat, 30 Apr 2011 08:46:24 +0000

Don’t waste your time with ‘wc -l’.

$ cat test.txt | grep “stuff” | wc -l
$ 25

Just use grep instead and save some pipes.

$ grep -c “stuff” test.txt
$ 25

By: Jonathan Matthews

Jonathan Matthews — Fri, 29 Apr 2011 10:00:20 +0000

1) bc doesn’t need all that rubbish:

user@host:~$ echo “sqrt(25)” | bc -ql
5.00000000000000000000

2) nl can be replaced by cat -n. Read the manpage

By: krishna

krishna — Fri, 22 Apr 2011 10:13:19 +0000

i have just used the command ldd atmost three times just to fine if there is any link…Can you let me know if there id any tutorial to get the details of all commands in linux with examples???

By: Brock Noland

Brock Noland — Tue, 15 Feb 2011 18:14:40 +0000

Yes I need to update the dead links.

By: Noah Campbell

Noah Campbell — Sat, 12 Feb 2011 01:44:44 +0000

xmlstarlet rocks for dealing with those angle brackets. Once you get used it, you scream for something similar for json and html.

By: diablomarcus

diablomarcus — Tue, 08 Feb 2011 23:18:06 +0000

Appears to be a dead links to man pages

By: Steve

Steve — Sat, 07 Aug 2010 20:30:50 +0000

Great pointers. I really like the split command.

By: Gregory

Gregory — Tue, 23 Mar 2010 23:27:09 +0000

Actually, ldd and split are very common. The only ones I didn’t really know were col and bc

By: manish tiwari

manish tiwari — Sat, 20 Feb 2010 16:37:58 +0000

all this command is usefull & important, mostly the “split” command…….
the iptables is also the important one’s now a days in selinux security

By: rahul benegal

rahul benegal — Sun, 27 Dec 2009 05:29:05 +0000

Some other interesting commands are:

*jot* – can not only generate sequential or random numbers but also repeat a number or character or do formatting.

jot -s “” -b . 40 # repeat 40 dots

rm `jot -w tmp%d 10 1`

*column* – columnate a list. ‘man column’ gives a nice example:

(printf “PERM LINKS OWNER GROUP SIZE MONTH DAY ” ; \
printf “HH:MM/YEAR NAME\n” ; \
ls -l | sed 1d) | column -t

*fold*
*fmt*
Both useful in wrapping text for a given width, with option of wrapping on word.

*ack* – this is actually a standalone perl script touted as “better than grep”. You’ll love it.

regards,
rahul