Superficially, it looks okay. Usually this happens when you have an "else" without a prior "if" but as far as I could quickly see, these are balanced. We could speculate that there is something outside the part you posted (or perhaps invisible control characers we can't see) which are masking out one of the early "if"s. A typical problem is if you have a missing closing quote somewhere; it's okay, in shell syntax, to have multi-line strings, so the string runs on and on and on and a large part of your script ends up missing because it's inside the string when finally another balancing close quote is encountered.
Maybe an example is better to show this.
See? So the "then" never happens as far as the shell is concerned, because it's inside a string, and then it acts surprised when it sees an "else" where it expected a "then". The reason is that the opening quote on the first line starts a long string which only ends just before the else.
This should quickly become evident if you run with set -vx but if it's a large script, of course, it all scrolls by very fast. 2>&1 | less is your friend.
Last edited by era; 03-29-2008 at 08:46 AM..
Reason: Note about set -vx
#!/bin/bash
for file in $HOME/*;
do
if ; then
rm -i $file > /dev/null
echo "$?"
echo "$file has been deleted"
fi
done
Been trying to learn shell scripting for a week or so now, when i run the script it doesnt display an error message, seems like it runs fine, however it doesnt delete... (10 Replies)
What is wrong in my IF loop
if
then
echo " The request is authenticated "
fi
The error im getting is
$ ./routing.sh server enables
**********************************************************************
Preparing to service the request for Device server in Question... (9 Replies)
Hi there, i've written a script to extract a portion of a MySQL database table and convert it to CSV and then to import it back as CSV to MySQL. Initially it worked without the while loop but after adding the while loop statement, i am getting the following error:
./export-csv-coordinates.sh:... (4 Replies)
Hi all,
I have been given a task to search for strings in a file that is encoded. I need to display the file name only when all the 3 strings which i provide are present in the file name.
i first try to get a list of files according from the directory according to the value passed in argument... (0 Replies)
hello everybody,
here's my code
mkf ()
{
INDEX=0;
while ; do
touch "file$1.f";
INDEX=$INDEX+1;
done
}
when I type
mkf 10
the loop seems to act infinite
and only the last file of the loop is created, in the example below, there just is file10.f in... (11 Replies)
Hello guys,
This truly is a newbie question. I'm trying to make a loop to execute simultaneous commands indefinitely while using variable. Here is how my mess looks like (this is just an example):
#!/bin/bash
IP=`shuf -n 1 IP.txt` # I figured this would be easier to select random lines... (4 Replies)
Hi ! all I am just trying to check range in my datafile
pls tell me why its resulting wrong
admin@IEEE:~/Desktop$ cat test.txt
0 28.4
5 28.4
10 28.4
15 28.5
20 28.5
25 28.6
30 28.6
35 28.7
40 28.7
45 28.7
50 28.8
55 28.8
60 28.8
65 28.1... (2 Replies)
Hello everyone,
I need a little help. I wrote a cshell script to change the format of a file but it is not working.
input file is like that:
2014 3 20 15 0 5.270 40.7739 27.6471 20.232 0.6 0 0 0 1
Site6 4.081 1.00 P
Site6 7.585 1.00 S
Site1 4.441 1.00 P... (9 Replies)
function get_tablespace()
{
## Get the current size of the tablespace
size=`su -l oracle -c 'db-control report' |egrep "DATA_TBS" | awk '{print $5}'|tr -d '%'`
## Loop through until the size is 82 or less
count=0
while &&
do
... (2 Replies)
Discussion started by: bille
2 Replies
LEARN ABOUT OSX
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)NAME
script -- make typescript of terminal session
SYNOPSIS
script [-akq] [-t time] [file [command ...]]
DESCRIPTION
The script utility makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an
interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
If the argument command is given, script will run the specified command with an optional argument vector instead of an interactive shell.
The following options are available:
-a Append the output to file or typescript, retaining the prior contents.
-k Log keys sent to program as well as output.
-q Run in quiet mode, omit the start and stop status messages.
-t time
Specify time interval between flushing script output file. A value of 0 causes script to flush for every character I/O event. The
default interval is 30 seconds.
The script ends when the forked shell (or command) exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-D (if
ignoreeof is not set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. The script utility works best with commands that do not
manipulate the screen. The results are meant to emulate a hardcopy terminal, not an addressable one.
ENVIRONMENT
The following environment variable is utilized by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism).
HISTORY
The script command appeared in 3.0BSD.
BUGS
The script utility places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
It is not possible to specify a command without also naming the script file because of argument parsing compatibility issues.
When running in -k mode, echo cancelling is far from ideal. The slave terminal mode is checked for ECHO mode to check when to avoid manual
echo logging. This does not work when in a raw mode where the program being run is doing manual echo.
BSD January 22, 2004 BSD