Cshell scripts Asimple spelling checker mylatex1.csh #!/bin/csh #!/bin/csh tr -cs "[:alpha:]" "[\n*]" < $1 \ latex file.tex |tr"[:upper:]" "[:lower:]" \ dvips -f file.dvi > file.ps |sort -u > tempfile rm file.aux file.dvi file.log comm -23 tempfile /usr/share/dict/words rm tempfile mylatex2.csh #!/bin/csh Put one word per line \ |convert everything to lowercase \ latex $1.tex |sor t the words,remove duplicates and write the result to ’tempfile’. dvips -f $1.dvi > $1.ps rm $1.aux $1.dvi $1.log Pr int those words in ’tempfile’ that are not in the dictionary. Remove the temporar y file.
Graham Kemp,Chalmers University of Technology Graham Kemp,Chalmers University of Technology
File permissions Command substitution in a script
ls -l To include the output from one command within the command line for another command, enclose the command whose output is to be included rwxrwx rwx within ‘backquotes‘. For example:
rwxr -xr -x #!/bin/csh
111101101 echo Date and time is: date echo 1111 011 012 = 7558 echo "Your username is:" ‘whoami‘ echo "Your current directory is:" ‘pwd‘ chmod 755 file.sh
chmod u+x file.sh
chmod -R a+rX .
Graham Kemp,Chalmers University of Technology Graham Kemp,Chalmers University of Technology Editing several files at once (1) sed scripts
Suppose wewant to change ‘‘cie’’to‘‘cei’’inall files in the current grep href publications.html \ director y whose name ends with ‘‘.tex’’. |sed ’s/[ˆ"]*"//’ \ |sed ’s/".*//’ #!/bin/csh Instead of giving a single editing command on the command line,wecan ls *.tex | sed ’s/.*/sed s\/cie\/cei\/g & > &tmp/’ > s1 create a script file containing a sequence of editing commands. ls *.tex | sed ’s/.*/mv &tmp &/’ > s2 csh s1 pubs.sed csh s2 s/[ˆ"]*"// rm s1 s2 s/".*//
This script creates twoauxiliar y scr ipts: s1 and s2. We can nowrequest that sed applies the the commands in this script file: unix> grep href publications.html | sed -f pubs.sed The command ‘‘csh’’for ks anon-interactiveCshell process that interprets the commands in a script.
Graham Kemp,Chalmers University of Technology Graham Kemp,Chalmers University of Technology
Editing several files at once (2) get_pdb_stats
Suppose there are three files in the current wor king director y whose #!/bin/csh names end with ‘‘.tex’’: ‘‘1.tex’’, ‘‘2.tex’’and ‘‘3.tex’’. #Select lines of StatReport.html containing tabular data, #|replace all HTML tags by a space character, store result in ’temp’. # Scr ipt s1 #Store Year-Deposited pairs (columns 1 and 2) in ’Deposited’. sed s/cie/cei/g 1.tex > 1.textmp #Store Year-Released pairs (columns 1 and 3) in ’Released’. sed s/cie/cei/g 2.tex > 2.textmp #Remove the temporary file. sed s/cie/cei/g 3.tex > 3.textmp grep ’align=right’ /chalmers/users/kemp/DAT160/practical2/StatReport.html \ |sed ’s/<[ˆ>]*>/ /g’ > temp Scr ipt s2 awk ’{print $1, $2}’ temp > Deposited mv 1.textmp 1.tex awk ’{print $1, $3}’ temp > Released mv 2.textmp 2.tex rm temp mv 3.textmp 3.tex
Graham Kemp,Chalmers University of Technology Graham Kemp,Chalmers University of Technology Plotting PDB sizewith GNUPLOT awk unix> gnuplot
GNUPLOT (Authors: Alfred Aho,Peter Weinberger,Brian Ker nighan) Unix version 3.7 patchlevel 1 last modified Fri Oct 22 18:00:00 BST 1999 awk "{print $2, $1, $3}" pdb.dat
Copyright(C) 1986 - 1993, 1998, 1999 Thomas Williams, Colin Kelley and many others awk ’{printf("First is %d, third is %d\n", $1, $3)}’ pdb.dat
Type ‘help‘ to access the on-line reference manual awk ’{printf("First is %d, second is %s\n", $1, $2)}’ pdb.dat The gnuplot FAQ is available from
Terminal type set to ’x11’ wc * | awk ’{print $3/$1, $4}’ gnuplot> plot "Deposited" with lines gnuplot> plot "Released" with lines gnuplot> plot "Deposited" with lines, "Released" with lines gnuplot> exit unix>
Graham Kemp,Chalmers University of Technology Graham Kemp,Chalmers University of Technology
Controlling interactive programs from within scripts fold and nl
The interactiveemail program‘‘mailx’’takes input from standard input. To send the contents of ‘‘file’’to‘‘kemp’’, wecan use the following command on the command line or within a script: mailx kemp < file Alter natively,wecan include the text of a message within a script: #!/bin/csh mailx kemp << END This is a test message. END or : #!/bin/csh mailx $1 << END Dear $1, This is a test message. END
Graham Kemp,Chalmers University of Technology Graham Kemp,Chalmers University of Technology