Some comments:
- If you use bash, then start your script with /bin/bash.
- NAWK and AWK are unused, they are distracting.
- It is possible you are using a version of ls that add some characters to the file name that makes it unusable by cat.
- It is also possible the xml filename contains blanks, in such case, you'll need to use double quotes at several places in your script.
- mac4rfree suggestion is incorrect, multiple files are happily displayed by cat.
Does anyone know what the microprograms behind cat (and other commands) are like? In what language are those programs designed? Is their source available somewhere?
No particular reason, just wondering.
I know it's a bit strange... (3 Replies)
hi all
i have some script
echo $$ > process-id
d='cat process-id'
if test-s "TMP"$d then
echo "serv1"
else
echo "serv2"
fi
the variable d should contain the number of the process,
instead of that it contains 'cat process-id'
how shall i do that the d will contain only the number?... (6 Replies)
Hello,
So I sorted my file as I was supposed to:
sort -n -r -k 2 -k 1 file1 | uniq > file2
and when I wrote
> cat file2
in the command line, I got what I was expecting, but in the script itself
...
sort -n -r -k 2 -k 1 averages | uniq > temp
cat file2
It wrote a whole... (21 Replies)
Hello,
I am trying to send text to a USB to serial adaptor and then to an external speech synthesizer. I tried using the cat and echo commands with no luck. I have gotten some audio output from my synthesizer using Kermit a terminal emulator, so I am pretty sure my synthesizer and my USB to serial... (1 Reply)
I am having problems getting a list of filenames that I want from a directory.
example: I have 3 files - filename.xxx.20110505.123030
filename.yyy.20110505.123030
filename.zzz.20110505.123030
There may be multiple xxx,... (3 Replies)
Can any one guide me how can i accomplish this by script
i continuously receive files via our ftp server into a certain folder is there a way i can take those files cat it to a new file by hour and create a new file when new hour starts? (4 Replies)
Can we concatenate say,
I have a few files prefixing with 2009...
So now i want all the 2009 files into one single file..
Can this be achieved???? (4 Replies)
hello! why this works?
cd /home/user
cat * | ecasound -i stdin -o jack
and this doesn't?
cd /home/user/somedirectory
cat * | ecasound -i stdin -o jack
somedirectory are full with exe files which are the best source for this sort of noise thing (10 Replies)
Apologies, probably a really simple problem:
I've got a text file (nh.txt) with this in it:
user1 email1 email2
user2 email1 email2
etc
With the following basic script:
for tline in $(cat nh.txt)
do
echo "**********"
echo $tline
done
... (3 Replies)
For the command below, I need to understand what exactly the command does and provide an examples for which the output will be saved to file save2... From my understanding, if the file provides an error in the first half of the pipe, it'll save to save1 and will never give an error to save to... (2 Replies)
Discussion started by: ayz649
2 Replies
LEARN ABOUT V7
script
SCRIPT(1) User Commands SCRIPT(1)NAME
script - make typescript of terminal session
SYNOPSIS
script [options] [file]
DESCRIPTION
script makes a typescript of everything displayed 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 the dialogue in this file. If no filename is given, the dialogue is saved in the file type-
script.
OPTIONS -a, --append
Append the output to file or to typescript, retaining the prior contents.
-c, --command command
Run the command rather than an interactive shell. This makes it easy for a script to capture the output of a program that behaves
differently when its stdout is not a tty.
-e, --return
Return the exit code of the child process. Uses the same format as bash termination on signal termination exit code is 128+n.
-f, --flush
Flush output after each write. This is nice for telecooperation: one person does `mkfifo foo; script -f foo', and another can
supervise real-time what is being done using `cat foo'.
--force
Allow the default output destination, i.e. the typescript file, to be a hard or symbolic link. The command will follow a symbolic
link.
-q, --quiet
Be quiet (do not write start and done messages to standard output).
-t[file], --timing[=file]
Output timing data to standard error, or to file when given. This data contains two fields, separated by a space. The first field
indicates how much time elapsed since the previous output. The second field indicates how many characters were output this time.
This information can be used to replay typescripts with realistic typing and output delays.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
NOTES
The script ends when the forked shell exits (a control-D for 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. script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
It is not recommended to run script in non-interactive shells. The inner shell of script is always interactive, and this could lead to
unexpected results. If you use script in the shell initialization file, you have to avoid entering an infinite loop. You can use for
example the .profile file, which is read by login shells only:
if test -t 0 ; then
script
exit
fi
You should also avoid use of script in command pipes, as script can read more input than you would expect.
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), scriptreplay(1)HISTORY
The script command appeared in 3.0BSD.
BUGS
script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
script is primarily designed for interactive terminal sessions. When stdin is not a terminal (for example: echo foo | script), then the
session can hang, because the interactive shell within the script session misses EOF and script has no clue when to close the session. See
the NOTES section for more information.
AVAILABILITY
The script command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux June 2014 SCRIPT(1)