10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
How does one assign a variable, x to equal the number of records in a different file.
I have a simple command such as below:
awk -F "\t" '(NR>5) { if(($x == "0/0")) { print $0} }' a.txt > a1.txt
but I want x to equal the number of records in a different file, b.txt (10 Replies)
Discussion started by: Geneanalyst
10 Replies
2. Shell Programming and Scripting
Hi
iam new to shell scripting
how to declare variables as redshift query and I have to compare two counts by using if condition .
ex:count=select count(*) from prd;
select count(*) from prd;
select count(*) from tag;
can any one help me .
Please use CODE tags when displaying... (1 Reply)
Discussion started by: sam526
1 Replies
3. Shell Programming and Scripting
Hi
I am new to UNIX. I am trying the below and getting the error.
I am trying to assign the variable with the value of the query result. I want this value to use in the next steps.
Created UNIX file (Batch.sh) as below
#!/bin/ksh
sqlplus callidus/callidus4u@attstcal @Batch.sql
... (2 Replies)
Discussion started by: KrishBalu
2 Replies
4. Shell Programming and Scripting
Hello Gurus,
Here is my requirement. I need to find the number of lines in a file and need to assign it to a variable. This is what I did and not wroking.
#!/bin/ksh
set -xv
Src_Path=/mac/dev/Generic/SrcFiles
Src_Count=wc -l ${Src_Path}/FILE_JUNE.txt
Count_file = $Src_Count | awk -F... (2 Replies)
Discussion started by: thummi9090
2 Replies
5. UNIX for Dummies Questions & Answers
Hi
im trying to assign the result of the db2 command to a variable inside a shell script...
: tab_cnt=`db2 "select count(*) from syscat.tables where tabname = 'ABC' and tabschema = 'MATT01'" |head -4|tail +4|cut -c 11`
: echo $tab_cnt
when i echo im getting a blank value.. im expecting... (1 Reply)
Discussion started by: matt01
1 Replies
6. Shell Programming and Scripting
Hi to all in forum,
I'm trying to convert the letter number between 1 (A) and 26 (Z), that part is working, my issue is how to assign the printf output to a variable:LetterNumber=10
printf "\x$(printf %x $((${LetterNumber}+64)))"
$ J
#The problem, how to assign printf output (J in this... (8 Replies)
Discussion started by: Ophiuchus
8 Replies
7. Shell Programming and Scripting
I have a file with a list of config files numbered on the lefthand side 1-300. I need to have bash read each lines number and assign it to a variable so it can be chosen by the user called by the script later.
Ex. 1 some data
2 something else
3 more stuff
which number do you... (1 Reply)
Discussion started by: glev2005
1 Replies
8. Shell Programming and Scripting
Hi Friends...
Please assist me to assign the result of a SQL query that results two column, to two variables.
Pls find the below code that I write for assigning one column to one variable. and please correct if anything wrong..
#! /bin/sh
no='
sqlplus -s uname/password@DBname... (4 Replies)
Discussion started by: little_wonder
4 Replies
9. Shell Programming and Scripting
Hi Guys !
I am new to unix and want to find out how we can make sql statement data to shell script variable?
Any help/suggestion is greatly appreciated
-Chandra (1 Reply)
Discussion started by: kattics
1 Replies
10. Shell Programming and Scripting
Hi,
I have a parameter file and it contains following items
$ cat TransactionParams
From_Date_Parm=2005-02-25
To_Date_Parm=2005-05-25
Extract_Root_Parm=/detld1/etl/ascential/Ascential/DataStage/Projects/CTI_London/IAM
Extract_Type_Parm=Transaction
EDW_Database_Parm=hdw_erks... (2 Replies)
Discussion started by: gopskrish
2 Replies
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)