Ana.Lalovic: /* Extract particula pages from pdf file */

2023-11-10T12:45:06Z

Extract particula pages from pdf file

Ana.Lalovic at 12:44, 10 November 2023

2023-11-10T12:44:49Z

Ana.Lalovic at 12:43, 10 November 2023

2023-11-10T12:43:37Z

Ana.Lalovic: Created page with "== Usefull short commands == === '''Kill a process tree''' === When some script is started from a command line in a for-loop and a process tree is made, one should find the..."

2023-11-10T12:40:32Z

Created page with "== Usefull short commands == === '''Kill a process tree''' === When some script is started from a command line in a for-loop and a process tree is made, one should find the..."

New page

== Usefull short commands ==

=== '''Kill a process tree''' ===

When some script is started from a command line in a for-loop and a process tree is made, one should find the parent process and its PID and then simply kill it:

$ pstree username -p 
sshd(19953)---bash(19954)---bash(22238)---idl(22323)-+-{idl}(22326)
|-{idl}(22327)
|-{idl}(22328)
`-{idl}(22329) 
sshd(20096)---bash(20097)
sshd(20762)---bash(20763)
sshd(21087)---bash(21088)-+-grep(21309)
`-top(21308)
sshd(21736)---bash(21737)
sshd(21780)---bash(21781)---pstree(22331)

Or if this tree is to long, one should ''grep'' the program (here:idl) with: $ pstree usrname -p | grep idl
$ kill 19953 
$ pstree username -p 
sshd(20096)---bash(20097)
sshd(20762)---bash(20763)
sshd(21087)---bash(21088)-+-grep(21309)
`-top(21308)
sshd(21736)---bash(21737)
sshd(21780)---bash(21781)---pstree(22332)

=== '''Change sth inside file''' ===

sed -i s/'\-9999'/'NaN'/g filename

This will change -9999 with NaN inside a file, without making some tmp file in between.

=== '''Print rotated picture''' ===

lp -o media=a4 -o orientation-requested=4 -o fitplot figure.ps

=== '''Print in fixed width format with awk''' ===

echo $a $b $c | awk '{for (i=1; i<=NF; i++) printf("%-20s ",$i);printf ("\n")}' > outfile.dat

where strings a,b,c may be entire lines.

=== '''Make a small size pdf out of several pdfs''' ===
gs -sDEVICE=pdfwrite -q -dNOPAUSE -dBATCH -sOutputFile=MajorFile.pdf SmallFiles*.pdf

Combined files can ba a mix of .pdf .ps and .eps files and output file can be a .ps also

=== '''Cut a portion of a pdf file saving resolution and sharpness''' ===
gs -g2700x3500 -sOUTPUTFILE=output.pdf -sDEVICE=pdfwrite -dBATCH -c "<< /PageOffset [-30 -120] >> setpagedevice" -f input.pdf

Where [-30 -120] means - shift the content of the old image to its left corner by (x,y)=(30,120) pixels (change the origin of the image) and 2700x3500 are the dimensions of the new image. Be careful - input.pdf should be a single page. 

=== '''Make a series of single-page EPS files from various inputs''' ===
gs -sDEVICE=epswrite -q -dNOPAUSE -dBATCH -dSAFER -sOutputFile=p%08d.eps 5page-first.pdf 7page-second.ps 1page-third.eps

The resulting files will be nicely named as p00000001.eps .... p00000013.eps

=== ''' Cut a portion of a .pdf file ''' ===
Make a script named boundingBox.sh:
gs \
-q \
-dBATCH \
-dNOPAUSE \
-sDEVICE=bbox \
-dLastPage=1 \
$1 \
2>&1 \
| grep %%BoundingBox

Call the script from the line with file_name as input:
./boundingBox.sh file.pdf

The result will be sth. like: %%BoundingBox: 42 510 305 746, where lower left img coords = (42,510) and upper right = (305,746). Finaly, to cut a box 305-42=263 px wide and 746-510=236 high, excluding 42 pixels from the left and 510 pixels from the bottom, make a script ''crop.sh'':
gs \
-o out.png \
-sDEVICE=pngalpha \
-g$2x$3 \
-dLastPage=1 \
-c "<</Install {$4 $5 translate}>> setpagedevice" \
-f $1

where $1x$2=width x height and $4 $5 are the portion excluded from the left and bootom. In this example:
./crop.sh file.pdf 263 236 -42 -510

To make .pdf out try:
gs -o out.pdf -sDEVICE=pdfwrite -c "[/CropBox [42 510 305 746] /PAGES pdfmark" -f file.eps

=== '''Convert eps to jpg using native gs''' ===
gs -sDEVICE=jpeg -q -dJPEGQ=100 -dNOPAUSE -dBATCH -dSAFER -r100 -sOutputFile=image.jpg image.eps # ''-r100'' should be changed to ''-r50'' for denser image

=== '''Convert (e)ps to png or gif ''' ===

name="imgName"; figdir="/home/..../Figures"; text="my image"
1. convert $name.ps -depth 8 -alpha off -density 600
2. convert $name.ps -depth 8 -alpha off -density 600 ${figdir}/${name}_large.gif
3. convert $name.ps -depth 8 -alpha off -density 600 -resize 320x240 ${figdir}/${name}_large.gif
4. convert $name.ps -depth 8 -alpha off -density 600 -gravity Southeast -font helvetica -pointsize 75 \
-draw "text 150,100 '$text'" ${figdir}/${name}_large.gif

1. Resulting image will be named as .eps and will end up at the same place.

2. Resulting image will be named imgName_large.gif and will be placed in \$figdir.

3. Additionally, image can be resized in the same step.

4. Put text into image

=== '''Resize image''' ===
mogrify -trim -resize 70% image.jpg # or ''-resize 800x600'' for fixed width

=== Screen command ===
screen -S name # name a screen
screen -ls # list all screens (those named will be easily read)
Ctrl+a+d # detach screen
screen -r name # attach to a screen
screen -S name -X quit # kill detached screen and return to a terminal
ls -laR /var/run/screen/ # lists when the screens start running

=== Several images into one ===
montage img1.png img2.png img3.png img4.png img5.png img6.png -tile 2x3 -frame 2 -geometry +0+0 out.png

=== Animation on .gif images ===
convert -delay 50 img1.gif img2.gif -loop 0 anim.gif

== Some cool stuff ==

* Very nice themes for Ubuntu 10.04

sudo add-apt-repository ppa:bisigi
sudo aptitude update
sudo aptitude install bisigi-themes

* Convert youtube .flv to .mp3 ([http://ubuntuforums.org/showthread.php?t=1117283 FORUM])
sudo apt-get install youtube-dl
sudo youtube-dl -U
sudo youtube-dl -U
sudo apt-get install ffmpeg libavcodec-unstripped-52
sudo apt-get install ubuntu-restricted-extras
# Example:
youtube-dl http://www.youtube.com/watch?v=Md7IhGYKncs
ffmpeg -i Md7IhGYKncs.flv -acodec libmp3lame -ab 128 indiana.mp3

== Install IRAF in Ubuntu 16 with Anaconda ==

Source: https://www.anaconda.com/download/#_unix

First install the following libs:

sudo apt-get install libc6:i386 libz1:i386 libncurses5:i386 libbz2-1.0:i386 libuuid1:i386 libxcb1:i386
sudo apt-get install libxmu-dev:i386

Then download Anaconda from https://www.continuum.io/downloads

cd /home/<user_name>/
bash Anaconda2-4.4.0-Linux-x86_64.sh
conda config --add channels http://ssb.stsci.edu/astroconda
conda create -n iraf python=2.7 iraf-all pyraf-all stsci
source activate iraf
mkiraf
<set to xgterm>
cl
...
source deactivate iraf

Pyraf also works in a standard way...

@@ Line 89: / Line 89: @@
-=== '''Extract particula pages from pdf file''' ===
+=== '''Extract particular pages from pdf file''' ===
@@ Line 109: / Line 109: @@
    fi
    gs -dNOPAUSE -dQUIET -dBATCH -sOutputFile="$4" -dFirstPage=$2 -dLastPage=$3 -sDEVICE=pdfwrite "$1"
 === '''Convert eps to jpg using native gs''' ===

← Older revision		Revision as of 12:44, 10 November 2023
Line 92:		Line 92:


−	#!/bin/sh	+	#!/bin/sh
−	#	+	#
−	# pdfsplit [input.pdf] [first_page] [last_page] [output.pdf]	+	# pdfsplit [input.pdf] [first_page] [last_page] [output.pdf]
−	#	+	#
−	# Example: pdfsplit big_file.pdf 10 20 pages_ten_to_twenty.pdf	+	# Example: pdfsplit big_file.pdf 10 20 pages_ten_to_twenty.pdf
−	#	+	#
−	# written by: Westley Weimer, Wed Mar 19 17:58:09 EDT 2008	+	# written by: Westley Weimer, Wed Mar 19 17:58:09 EDT 2008
−	#	+	#
−	# The trick: ghostscript (gs) will do PDF splitting for you, it's just not	+	# The trick: ghostscript (gs) will do PDF splitting for you, it's just not
−	# obvious and the required defines are not listed in the manual page.	+	# obvious and the required defines are not listed in the manual page.

−	if [ $# -lt 4 ]	+	if [ $# -lt 4 ]
−	then	+	then
−	echo "Usage: pdfsplit input.pdf first_page last_page output.pdf"	+	echo "Usage: pdfsplit input.pdf first_page last_page output.pdf"
−	exit 1	+	exit 1
−	fi	+	fi
−	gs -dNOPAUSE -dQUIET -dBATCH -sOutputFile="$4" -dFirstPage=$2 -dLastPage=$3 -sDEVICE=pdfwrite "$1"	+	gs -dNOPAUSE -dQUIET -dBATCH -sOutputFile="$4" -dFirstPage=$2 -dLastPage=$3 -sDEVICE=pdfwrite "$1"

@@ Line 87: / Line 87: @@
 To make .pdf out try:
   gs -o out.pdf -sDEVICE=pdfwrite -c "[/CropBox [42 510 305 746] /PAGES pdfmark" -f file.eps
 === '''Convert eps to jpg using native gs''' ===

LinuxShort - Revision history

Ana.Lalovic: /* Extract particula pages from pdf file */

Ana.Lalovic at 12:44, 10 November 2023

Ana.Lalovic at 12:43, 10 November 2023

Ana.Lalovic: Created page with "== Usefull short commands == === '''Kill a process tree''' === When some script is started from a command line in a for-loop and a process tree is made, one should find the..."