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Commands by flux

Commands by flux from sorted by
Terminal - Commands by flux - 8 results
seq 1 12 | sed 1,5d ; seq 1 12 | head --lines=-5
2009-08-01 00:41:52
User: flux
Functions: head sed seq
Tags: sed tail HEAD fun
0
Up
Down
skipping five lines, at top, then at bottom

Strangely enough, there is no option --lines=[negative] with tail, like the head's one, so we have to use sed, which is very short and clear, you see.

Strangely more enough, skipping lines at the bottom with sed is not short nor clear. From Sed one liner :

# delete the last 10 lines of a file

$ sed -e :a -e '$d;N;2,10ba' -e 'P;D' # method 1

$ sed -n -e :a -e '1,10!{P;N;D;};N;ba' # method 2

Show sample output | Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
xinit -- :1
2009-07-31 23:42:28
User: flux
Tags: ssh X X11 xinit
3
Up
Down
from the console, start a second X server

This starts a very basic X session, with just a simple xterm. You can use this xterm to launch your preferred distant session.

ssh -X john@otherbox gnome-session

Try also startkde or fluxbox or xfce4-session.

To switch between your two X servers, use CTRL+ALT+F7 and CTRL+ALT+F8.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo $( du -sm /var/log/* | cut -f 1 ) | sed 's/ /+/g'
2009-07-31 21:42:53
User: flux
Functions: cut du echo sed
Tags: echo bc
2
Up
Down
cooking a list of numbers for calculation

When you've got a list of numbers each on its row, the ECHO command puts them on a simple line, separated by space. You can then substitute the spaces with an operator. Finally, pipe it to the BC program.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
yes '' | cat -n
2009-04-22 17:58:46
User: flux
Functions: cat yes
18
Up
Down
a short counter

Maybe you know shorter ?

Show sample output | Comments (5) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ldapsearch -v -H ldap://<server> -x -D cn=<johndoe>,cn=<users>,dc=<ourdomain>,dc=<tld> -w<secret> -b ou=<lazystaff>,dc=<ourdomain>,dc=<tld> -s sub sAMAccountName=* '*' | perl -pne 's/(\d{11})\d{7}/"DATE-AD(".scalar(localtime($1-11644473600)).")"/e'
2009-04-22 00:57:34
User: flux
Functions: perl
Tags: Date manipulation perl ldap
4
Up
Down
decoding Active Directory date format

When Ldapsearch queries an Active directory server, all the dates are shown using a timestamp of 18 digits. This perl regexp decodes them in a more human friendly notation. 11644473600 corresponds to some microsoft epoch.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cal 09 1752
2009-04-22 00:13:19
User: flux
Functions: cal
Tags: date fun
9
Up
Down
synchronicity

The British Government entering in the Gregorian era.

Show sample output | Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ls /home | head -64 | barcode -t 4x16 | lpr
2009-04-21 22:54:45
User: flux
Functions: head ls
Tags: printing
8
Up
Down
printing barcodes

64 elements max on 16 rows, 4 cols.

GNU Barcode will adapt automagically the width and the eight of your elements to fill the page.

Standard output format is PostScript.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
( cat badfile.log ; tac badfile.log | tac ) > goodfile.log
2009-04-21 22:06:05
User: flux
Functions: cat tac
15
Up
Down
restoring some data from a corrupted text file

man tac

When there is a bad block in the middle of your file, you can see its begninning with `cat' and its end with `tac'. But both commands terminates with an error. So this sequence rebuilds a new file without badblock.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate