9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
This came up a little in another thread. Can someone explain some why awk (I happen to use gawk) behaves as follows:
$ cat file
aaa
$ awk 'BEGIN {print x}' x=1
$ awk x=1 'BEGIN {print x}'
awk: fatal: cannot open file `BEGIN {print x}' for reading (No such file or directory)
$ awk -v... (6 Replies)
Discussion started by: hanson44
6 Replies
2. Shell Programming and Scripting
Hia,
echo ${!S*}
gives me all those env vars starting with S like SHELL SECONDS SHELLOPTS SHLVL etc.
is there any way to deflate the shell variables' range like
echo ${!A-E*} OR echo ${!A..S*}
to list all env vars starting within range of A till E. Thanks
Regards,
Nasir (1 Reply)
Discussion started by: busyboy
1 Replies
3. Shell Programming and Scripting
i want to read a string and reverse it. hoe do i do that..?? (1 Reply)
Discussion started by: akshaykumar6
1 Replies
4. Shell Programming and Scripting
I need to process a file line-by-line using some value from a shell variable
Something like:perl -p -e 's/$shell_srch/$shell_replace/g' input.txt
I can't make the '-s' work in the '-p' or '-n' input loop (or couldn't find a syntaxis.)
I have searched and found... (4 Replies)
Discussion started by: alex_5161
4 Replies
5. Shell Programming and Scripting
I have a shell script I want to run that will set environment variables based on the value of an input variable submitted when the shell script is called. For example:
$ mgenv.sh prod
This would set environment variables for prod
$ mgenv.sh test
This would set environment variables... (1 Reply)
Discussion started by: brtaylor73
1 Replies
6. Shell Programming and Scripting
hi all, i am trying to write an awk script in which i want to perform calculations on each column in a file. i have this so far:
total=`awk '/ 1 / { j++ } {sum+=$i} END {print (sum/j)}' "$count".txt`
((count++))
((i++))
i am calculating the average for every column. i am trying to use... (1 Reply)
Discussion started by: npatwardhan
1 Replies
7. Shell Programming and Scripting
I'm trying to pass nawk a shell variable to be used in a pattern match. I can't get this work.
I'm calling nawk from a /bin/sh
I want that when somebody enters Trunk Group in variable TGR so it goes into nawk variable TG.
echo "Enter TRUNK GROUP:"
read TGR
cat... (20 Replies)
Discussion started by: wakhan
20 Replies
8. Shell Programming and Scripting
Hello,
presently, I'm calling nawk from my main script and have nawk defined in one file. So I call nawk like this
nawk -f file input
This file defines how to separate mails in /var/mail/$user and show 1 at a time. However, I would also like to do other actions (delete message, forward... (9 Replies)
Discussion started by: petoSVK
9 Replies
9. Shell Programming and Scripting
I'm trying to pass nawk a shell variable to be used in a pattern match. I can't get this work.
I'm calling nawk from a /bin/sh
echo " Input file: \c"
read var1
echo " Input: \c"
read var2
nawk -F"|" -v x=$1 ' BEGIN
$15 ~ /^'$var2'/ {print $2}' var1 {apary=$15; bparty=$23; time=$4;... (3 Replies)
Discussion started by: amon
3 Replies
awk operating with shell vars only
