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Commands by totti

Terminal - Commands by totti - 80 results

var='123456789'; echo ${var:<start_pos>:<offset>}

2011-09-14 20:05:17

User: totti

Functions: echo

Tags: variable substring

Up
Down

Substrings a variable

substrings a variable starting at position.

If no offset given prints rest of the line

c=$(pgrep <cmd>) && <new_cmd> && kill $c

2011-09-14 19:58:30

User: totti

Functions: kill

Tags: pgrep substitution command

Up
Down

Substitute an already running command

eg:

Already running cmd

sleep 120

Substitution cmd

c=$(pgrep sleep) && sleep 5 && kill $c

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

bsdiff <oldfile> <newfile> <patchfile>

2011-09-13 18:22:40

User: totti

Tags: diff binary file patch

Up
Down

Binary difference of two files

Upload/download newer version of any file with less size and high speed.

To remake the new file use

bspatch <oldfile> <newfile> <patchfile>

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

less file.ext

2011-09-13 10:29:27

User: totti

Functions: less

Tags: less text search

-4

Up
Down

Common key binding for 'less' to search for a string

Use the following key binding to search

----------------------------------------------------------------

ng

: Jump to line number n. Default is the start of the file.

nG

: Jump to line number n. Default is the end of the file.

/pattern

: Search for pattern. Regular expressions can be used. [/ = slash] Press / and then Enter to repeat the previous search pattern. Press ESC and then u to undo search highlighting.

n

: Go to next match (after a successful search).

N

: Go to previous match.

mletter

: Mark the current position with letter.

'letter

: Return to position letter. [' = single quote]

'^ or g

: Go to start of file.

'$ or G

: Go to end of file.

s

: Save current content (got from another program like grep) in a file.

= or Ctrl+g

: File information.

F

: continually read information from file and follow its end. Useful for logs watching. Use Ctrl+c to exit this mode.

-option

: Toggle command-line option -option.

h

: Help.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

smartctl -A /dev/sda | grep Power_On_Hours

2011-09-09 20:29:46

User: totti

Functions: grep

Tags: hard disk power

Up
Down

How long has this disk been powered on

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

tr -d "\r" < file.vcf | tr "\0" " " > file.vcf.txt

2011-09-09 19:21:44

User: totti

Functions: tr

Tags: text convert vcard

Up
Down

Convert phone book VCARD to text

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

tr -d "\r" < dos.txt > linux.txt

2011-09-09 18:53:34

User: totti

Functions: tr

Tags: Linux windows text conversion

Up
Down

Convert windows text file to linux text document

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

mogrify -resize 600x800! *.jpg

2011-09-09 18:19:59

User: totti

Tags: ImageMagick image batch resize

Up
Down

Batch resize image to exact given resolution ignoring aspect ratio

- Backup data before reszie as it over write original

-To preserve aspect ratio remove !

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

hexdump -c <file>

2011-09-09 09:54:16

User: totti

Functions: hexdump

Tags: binary print hexdump text

Up
Down

print all characters of any file in human readble form using hexdump

- View non printable characters.

- view binary files

say() { wget -q -U Mozilla -O output.mp3 "http://translate.google.com/translate_tts?tl=en&q=$1"; gnome-terminal -x bash -c "totem output.mp3"; sleep 4; totem --quit;}

2011-09-07 19:48:53

User: totti

Functions: bash sleep wget

Tags: google say text to speech

Up
Down

Gets the english pronunciation of a phrase

No need to install additional packages

eg:

say hello

For multiword

say how+are+you

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

<Ctrl><Alt><F6> killall5

2011-09-07 19:19:34

User: totti

Tags: display logout killall5

Up
Down

Get rid from a blank display without reboot

Killall5 will kill your session and redirect to login screen.

-Very useful when suffering display problems.

-Can use F1-F6

-Need to login in the particular console if not already

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

wallpaperWarn() { BG="/desktop/gnome/background/picture_filename"; convert "`gconftool-2 -g $BG`" -pointsize 70 -draw "gravity center fill red text 0,-360 'Warn' fill white text 0,360 'Warn'" /tmp/w.jpg; gconftool-2 --set $BG -t string "/tmp/w.jpg"; }

2011-09-07 19:00:40

User: totti

Tags: image wallpaper text

Up
Down

Text message on wallpaper

Display some text on the wallpaper especially warning messages

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

convert -background none -pointsize 55 label:"`whoami`" me.png

2011-09-07 17:06:38

User: totti

Tags: ImageMagick image convert

Up
Down

Text to image with transparent background

Create transparent image to use as icon, watermark for other images, etc.

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

sed '4!d'

2011-09-05 17:54:57

User: totti

Functions: sed

Tags: Text Processing sed

-1

Up
Down

Print just line 4 from a textfile

d --> delete

!d ---> delete others

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

bc <<< `uptime | sed -e 's/^.*up //' -e 's/[^0-9:].*//' | sed 's/:/*60+/g'`

2011-08-29 10:24:43

User: totti

Functions: bc sed

Tags: sed uptime minutes

Up
Down

Uptime in minute

Want to run scripts/programs in the system after starting X minute [ For letting the system to free ]? This will give uptime in minute.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

seq 20 | sed '5,6 { w out.txt }' #Can't print correctly. See sample output

2011-08-29 10:17:47

User: totti

Functions: sed seq

Tags: sed

Up
Down

Read/Write output/input from sed to a file

Can't print correctly in the command field.

There is a new line before } as follows

seq 20 | sed -n '5,6 { w out.txt

mount |tail -1 | less -p "/dev/[^ ]*"

2011-08-28 16:29:42

User: totti

Functions: less mount tail

Tags: device mount point

-3

Up
Down

last mounted device

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

switchMonitor () { LF=/tmp/screen-lock; if [ -f $LF ]; then rm $LF; else touch $LF; sleep .5; while [ -f $LF ]; do xset dpms force off; sleep 2; done; fi };

2011-08-26 17:55:44

User: totti

Functions: rm sleep touch

Tags: screen power xset dpms

Up
Down

shut of the screen ( Fool proof )

Use the command to create a script and bind it to a key using keyboard shortcut.

eg:

Script locks the screen in a loop until the command is executed again.At first it

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

echo "abcde" | sed 's/./& /g'

2011-08-26 16:54:26

User: totti

Functions: echo sed

Tags: Text Processing sed

Up
Down

Matched string reference in replacement text

Use matched data and some other as replacement data

NotifyOnBATTERY () { while :; do on_ac_power||notify-send "Running on BATTERY"; sleep 1m; done }

2011-08-26 11:54:16

User: totti

Functions: sleep

Tags: battery notify

Up
Down

Notify on Battery power

Works on Laptops, Desktop having communication b/w UPS & CPU

for i in `seq -w 1 50`; do wget --continue \ http://commandline.org.uk/images/posts/animal/$i.jpg; done

2011-08-19 20:06:16

User: totti

Functions: wget

Tags: wget seq download

Up
Down

Download a set of files that are numbered

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

apropos <part_rember> | less

This is sample output - yours may be different.

apropos pdf | less


acroread (1)         - Adobe PDF Viewer for viewing PDF files on X Window System.
dvipdf (1)           - Convert TeX DVI file to PDF using ghostscript and dvips
evince-thumbnailer (1) - create png thumbnails from PostScript and PDF documents
foomatic-ppdfile (1) - Generate a PPD file for a given printer/driver combo
ghostscript (1)      - Ghostscript (PostScript and PDF language interpreter and previewer)
gs (1)               - Ghostscript (PostScript and PDF language interpreter and previewer)
gsnd (1)             - Run ghostscript (PostScript and PDF engine) without display
pdf2dsc (1)          - generate a PostScript page list of a PDF document
pdf2ps (1)           - Ghostscript PDF to PostScript translator
pdffonts (1)         - Portable Document Format (PDF) font analyzer (version 3.00)
pdfimages (1)        - Portable Document Format (PDF) image extractor (version 3.00)
pdfinfo (1)          - Portable Document Format (PDF) document information extractor (version 3.00)
pdfopt (1)           - Ghostscript PDF Optimizer
pdftohtml (1)        - program to convert pdf files into html, xml and png images
pdftoppm (1)         - Portable Document Format (PDF) to Portable Pixmap (PPM) converter (version 3.00)
pdftops (1)          - Portable Document Format (PDF) to PostScript converter (version 3.00)
pdftotext (1)        - Portable Document Format (PDF) to text converter (version 3.00)
ps2ascii (1)         - Ghostscript translator from PostScript or PDF to ASCII
ps2pdf (1)           - Convert PostScript to PDF using ghostscript
ps2pdf12 (1)         - Convert PostScript to PDF 1.2 (Acrobat 3-and-later compatible) using ghostscript
ps2pdf13 (1)         - Convert PostScript to PDF 1.3 (Acrobat 4-and-later compatible) using ghostscript
ps2pdf14 (1)         - Convert PostScript to PDF using ghostscript
ps2pdfwr (1)         - Convert PostScript to PDF without specifying CompatibilityLevel, using ghostscript
(END)

2011-08-19 19:34:57

User: totti

Functions: apropos

Tags: less apropos

Up
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Get full from half remembered commands

Show all commands having the part known by you.

Eg:

apropos pdf | less

fileName() { echo "$1" | grep -o "[^/]*$"; }

2011-08-19 18:16:22

User: totti

Functions: echo grep

Tags: grep basename

-1

Up
Down

Alternative for basename using grep to extract file name

fileName /path/to/file.ext

quivalent to

basename /path/to/file.ext

VBoxManage internalcommands createrawvmdk -filename [path/to/file/name.vmdk] -rawdisk /dev/[block_device]

2011-08-19 14:26:22

User: totti

Tags: boot virtualbox block raw disk virtual device

Up
Down

Boot block devices as virtual devices in Virtual Box

eg:

VBoxManage internalcommands createrawvmdk -filename ~/.VBox_sdc.vmdk -rawdisk /dev/sdc

In order to start virtual box using block devices, ( Or to boot from it) run as ROOT

sudo VirtualBox

Then add & select the vmdk file as a device.

At last Start the virtual box.

- This cmd needs to run once for a device.

- See command 8936 to run with out using ROOT power and easy handling of Virtual m/c

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

allVideos() { find ./ -type f -print0 | xargs -0 file -iNf - | grep ": video/" | cut -d: -f1; }

2011-08-19 11:58:59

User: totti

Functions: cut file find grep xargs

Tags: video find grep mime

Up
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Find all videos under current directory using MIME a.k.a not using extension

Videos are found using their MIME type. Thus no need to for an extension for the video file.

This is a efficent version of "jnash" cmd (4086). Thanks for jnash. This cmd will only show video files while his cmd show files having "video" anywhere in path.

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