07-08-2015
In fact, I've still got no chance to understand what you are doing without samples of the input files. But some comments:
- don't redirect into the file that you use as input; the redirection takes precedence and truncates the input file BEFORE it can be read.
- with a smart regex you can have ALL those sed commands in one single command.
- Why don't you save those sed results in a variable that can be reused later in need be?
- Why do you use sed at all? Use bash's parameter expansion capabilities on $line.
- Not sure if you really want to call that .sh script for every line in your input file.
This User Gave Thanks to RudiC For This Post:
5 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi guys
I have a shell script that executes sql statemets and sends the output to a file.the script takes in parameters executes sql and sends the result to an output file.
#!/bin/sh
echo " $2 $3 $4 $5 $6 $7
isql -w400 -U$2 -S$5 -P$3 << xxx
use $4
go
print"**Changes to the table... (0 Replies)
Discussion started by: magikminox
0 Replies
2. Shell Programming and Scripting
I am using blow script :--
#!/bin/bash
FIND=$(ps -elf | grep "snmp_trap.sh" | grep -v grep) #check snmp_trap.sh is running or not
if
then
# echo "process found"
exit 0;
else
echo "process not found"
exec /home/Ketan_r /snmp_trap.sh 2>&1 & disown -h ... (1 Reply)
Discussion started by: ketanraut
1 Replies
3. UNIX for Dummies Questions & Answers
I am trying to call a script(callingscript.sh) from a master script(masterscript.sh) to get string type value from calling script to master script. I have used scripts mentioned below.
#masterscript.sh
./callingscript.sh
echo $fileExist
#callingscript.sh
echo "The script is called"... (2 Replies)
Discussion started by: Raj Roy
2 Replies
4. Shell Programming and Scripting
Hello all,
I am facing a weird issue while executing a code below -
#!/bin/bash
cd /wload/baot/home/baotasa0/sandboxes_finance/ext_ukba_bde/pset
sh UKBA_publish.sh UKBA 28082015 3
if
then
echo "Param file conversion for all the areas are completed, please check in your home directory"... (2 Replies)
Discussion started by: ektubbe
2 Replies
5. Shell Programming and Scripting
I'm new to utilities like socat and netcat and I'm not clear if they will do what I need.
I have a "compileDeployStartWebServer.sh" script and a "StartBrowser.sh" script that are started by emacs/elisp at the same time in two different processes.
I'm using Cygwin bash on Windows 10.
My... (3 Replies)
Discussion started by: siegfried
3 Replies
while(3tcl) Tcl Built-In Commands while(3tcl)
__________________________________________________________________________________________________________________________________________________
NAME
while - Execute script repeatedly as long as a condition is met
SYNOPSIS
while test body
_________________________________________________________________
DESCRIPTION
The while command evaluates test as an expression (in the same way that expr evaluates its argument). The value of the expression must a
proper boolean value; if it is a true value then body is executed by passing it to the Tcl interpreter. Once body has been executed then
test is evaluated again, and the process repeats until eventually test evaluates to a false boolean value. Continue commands may be exe-
cuted inside body to terminate the current iteration of the loop, and break commands may be executed inside body to cause immediate termi-
nation of the while command. The while command always returns an empty string.
Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the while command starts execut-
ing, which means that variable changes made by the loop body will not be considered in the expression. This is likely to result in an
infinite loop. If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter-
ation), so changes in the variables will be visible. For an example, try the following script with and without the braces around $x<10:
set x 0
while {$x<10} {
puts "x is $x"
incr x
}
EXAMPLE
Read lines from a channel until we get to the end of the stream, and print them out with a line-number prepended:
set lineCount 0
while {[gets $chan line] >= 0} {
puts "[incr lineCount]: $line"
}
SEE ALSO
break(3tcl), continue(3tcl), for(3tcl), foreach(3tcl)
KEYWORDS
boolean value, loop, test, while
Tcl while(3tcl)