Shell Programming and Scripting

for i in *.txt
do
echo $i
awk '/<.*/ , /.*<\/.*>/' "$i" | tr -d '\n'
echo -ne '\n' 
done

 
function first {
#to_process=$1
cd $1
for i in *.txt
do
echo $i
awk '/<.*/ , /.*<\/.*>/' "$i" | tr -d '\n'
echo -ne '\n' 
done
}
first /home/Folder1 &
first /home/Folder2 &
wait

for dir in `find /home -type d -name "Folder*"`; do
  first $dir &
done

#!/usr/bin/env bash

# @(#) s1	Demonstrate multiple processes simultaneously, with "GNU parallel".

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C parallel

pl " Structure of directories:"
tree d1 d2

pl " Results of parallel processes:"
ls d1/* d2/* |
grep txt |
parallel --ungroup 'echo -n job {#}, process $$", wc = "; wc {}' |
align

exit 0

% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
parallel GNU parallel 20111122

-----
 Structure of directories:
d1
|-- a.txt
|-- b.txt
|-- binary-1.exe
`-- c.txt
d2
|-- frog-town.jpg
|-- x.txt
`-- y.txt

0 directories, 7 files

-----
 Results of parallel processes:
job 1, process 27495, wc =  4  16   70 d1/a.txt
job 2, process 27515, wc = 16  16  123 d1/b.txt
job 3, process 27535, wc = 26 265 1464 d1/c.txt
job 4, process 27555, wc =  4  16   70 d2/x.txt
job 5, process 27575, wc = 16  16  123 d2/y.txt