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 Friends,
I have a question, i am trying to write a shell script in the bash shell.
#!/bin/sh
NAWK=/bin/nawk
AWK=/bin/awk
FIX_XML_PATH=/home/administrator/testfix/fix/
Y=`ls $FIX_XML_PATH | grep xml`
echo $Y
cat $Y
in this case when i do the echo $Y command it gives me the... (11 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)
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 OPENDARWIN
gzexe
GZEXE(1) General Commands Manual GZEXE(1)NAME
gzexe - compress executable files in place
SYNOPSIS
gzexe [ name ... ]
DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a
penalty in performance). For example if you execute ``gzexe /bin/cat'' it will create the following two files:
-r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat
-r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~
/bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file. You can remove /bin/cat~ once you are sure that
/bin/cat works properly.
This utility is most useful on systems with very small disks.
OPTIONS -d Decompress the given executables instead of compressing them.
SEE ALSO gzip(1), znew(1), zmore(1), zcmp(1), zforce(1)CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the
PATH environment variable to find gzip and some other utilities (tail, chmod, ln, sleep).
BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases,
using chmod or chown.
GZEXE(1)