bash-script input

aizkorri · 06-30-2003, 05:40 AM

Hi, I've done a bash script that works with one input. like:

nireScript textMay6123.txt

I'm trying to execute that script with a * in the input so that It can be done for more than one file. e .g

nireScript textMay6*.txt

Do you know how can I read all that files as input from inside the script?

crabboy · 06-30-2003, 10:28 AM

When you put the '*' on the command line the shell will do the expansion before calling the script. When the script is called it may have more then one parameter. Take this example:

Code:

#!/bin/sh

# Script: test.sh

echo $1
echo $2
echo $3

Code:

# touch test1.txt
# touch test2.txt
# touch test3.txt

# ./test.sh test*.txt
test1.txt
test2.txt
test3.txt

The shell will find all the matches for test*.txt and substitute it for original text.

Code:

./test.sh test*.txt
./test.sh test1.txt test2.txt test3.txt

So this script should work for any number of parameters:

Code:

#!/bin/sh

for i in $@; do
  echo $i
done

aizkorri · 07-01-2003, 01:13 AM

understood, thanks a lot.

yuray · 07-07-2003, 07:20 AM

#!/bin/sh

for i
echo $i
done

From book Kernigan & Pike

yuray · 07-07-2003, 07:22 AM

Sorry

for i
do
echo $i
done

unSpawn · 07-07-2003, 08:27 AM

Kinda OT note: make sure you use proper quoting.
touch "vermin0.txt;ls -al" "vermin1.txt *" vermin2.txt
bad() { set -x; for i in $@; do echo "got: $i"; done; set +x; }
good() { set -x; IFS="
" ; for i in "$@"; do echo ""$i""; done; set +x; }

Now try "bad verm*" and you'll see why.

yuray · 07-08-2003, 12:11 AM

Kernighan can`t be wrong

yuray@yuray:~/ttt$ bad() { set -x; for i; do echo "got: $i"; done; set +x; }
yuray@yuray:~/ttt$ bad verm*
+ echo 'got: vermin0.txt;ls -al'
got: vermin0.txt;ls -al
+ echo 'got: vermin1.txt *'
got: vermin1.txt *
+ echo 'got: vermin2.txt'
got: vermin2.txt
+ set +x
yuray@yuray:~/ttt$

unSpawn · 07-08-2003, 06:15 AM

Got no beef with Kernighan. You didn't see me spice it up with "$@": bad() { set -x; for i in $@; do (...)