They are great scripts AskApache! I will read them in more depth when I get online later. At a glance at your shcat script, and the mention of the broken pipe problem, I remembered a thread over at the gnulib-bug-mailinglist, particularly this bit:
Quote:
> The second is that the echo builtin in bash-3.2 displays a message on
> a write error, instead of letting the exit status communicate the error.
> When the shell receives SIGPIPE and handles it without exiting, writes
> to that pipe return -1/EPIPE, and the echo builtin reports the error. In
> earlier versions, you wouldn't have seen the message.
>
> The bash 3.2 "printf" builtin doesn't have this problem though.
Aha! So it's really a bug in the 'echo' built-in, and using 'printf' is a
work-around.
I tried running your shcat with the echo's replaced with printf's as below:
but on my shell it still had the error... Strangely, when I used the non-builtin printf like so:
it worked perfectly (but ridiculously slowly...).
STEP 1
# Set variable
FILE=/tmp/mainfile
SEARCHFILE =/tmp/searchfile
# THIS IS THE MAIN FILE.
cat /tmp/mainfile
Interface Ethernet0/0 "outside", is up, line protocol is up
Hardware is i82546GB rev03, BW 100 Mbps
Full-Duplex(Full-duplex), 100 Mbps(100 Mbps)
MAC address... (6 Replies)
Hi ,
I am trying to write an shell, which reads a text file (from a location) having a list of numbers of strictly 5 digits only ex: 33144
Now my script will check :
1) that each entry is only 5 digits & numeric only, no alphabets, & its not empty.
2)then it executes a shell script called... (8 Replies)
Hi All,
I'm trying to figure out which are the trusted-ips and which are not using a script file.. I have a file named 'ip-list.txt' which contains some ip addresses and another file named 'trusted-ip-list.txt' which also contains some ip addresses. I want to read a line from... (4 Replies)
hello all
I'm writing a bash script and I need to read data from a file line by line
The number of words of each line is not known and I want to check if anywhere
in the line exists the substring www..That substring is a string by itself
or a substring of other strings.So what I tried so far... (4 Replies)
Hello,
I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be:
SRVXPAPI001 ERRO JUN24 07:28:34 1775
REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F
... (8 Replies)
Hi All,
Am trying to write wrapper shell/bash script on a utility tool for which i need to pass 2 files as arugment to execute utility tool.
Wraper script am trying is to do with above metion 2 files.
utility tool accepts :
a. userinfo file : which contains username
b. item file : which... (2 Replies)
Hi all,
I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like:
<date1>|<data1>|<url1>|<result1>
<date2>|<data2>|<url2>|<result2>
<date3>|<data3>|<url3>|<result3>
<date4>|<data4>|<url4>|<result4>
What I... (3 Replies)
Heyas
I'm trying to read/display a file its content and put borders around it (tui-cat / tui-cat -t(ypwriter).
The typewriter-part is a 'bonus' but still has its own flaws, but thats for later.
So in some way, i'm trying to rewrite cat using bash and other commands.
But sadly it fails on... (2 Replies)
Hello,
I'm works on Ubuntu server
My goal : I would like to read file line per line, but i want to started at the end of file.
Currently, I use instructions :
while read line;
do
COMMAND
done < /var/log/apache2/access.log
But, the first line, i don't want this. The file is long... (5 Replies)
I have a file
file_name_O.txt
The file can have different number of other files names or nothing
I will check
cnt=`wc -l file_name_0.txt`
if ;then
exit 1
fi
Now I have to start checking file names, i.e. read txt file line by line. If amount of ,lines equal 1, I can... (4 Replies)
Discussion started by: digioleg54
4 Replies
LEARN ABOUT HPUX
wc
wc(1) General Commands Manual wc(1)NAME
wc - count words, lines, and bytes or characters in a file
SYNOPSIS
[file]...
DESCRIPTION
The command counts lines, words, and bytes or characters in the named files, or in the standard input if no file names are specified. It
also keeps a total count for all named files.
A word is a string of characters delimited by spaces, tabs, or newlines.
Options
recognizes the following options:
Report the number of bytes in each input file.
Report the number of newline characters in each input file.
Report the number of characters in each input file.
Report the number of words in each input file.
The and options are mutually exclusive. Otherwise, the and or options can be used in any combination to specify that a subset of lines,
words, and bytes or characters are to be reported.
When any option is specified, reports only the information requested. If no option is specified, the default output is
When a file is specified on the command line, its name is printed along with the counts.
Standard Output
By default, the standard output contains an entry for each input file in the form:
newlines words bytes file
If the option is specified, the number of characters replaces the bytes field in this format.
If any option is specified, the fields for the unspecified options are omitted.
If no file operand is specified, neither the file name nor the preceding blank character is written.
If more than one file operand is specified, an additional line is written at the end of the output, of the same format as the other lines,
except that the word (in the POSIX locale) is written instead of a file name and the total of each column is written as appropriate.
Under UNIX Standard environment, a word is a string of characters delimited by spaces, tabs, newline, carriage-return, vertical tab, or
form-feed.
RETURN VALUE
exits with one of the following values:
Successful completion.
An error occurred.
EXTERNAL INFLUENCES
For information about the UNIX Standard environment, see standards(5).
Environment Variables
determines the range of graphics and space characters, and the interpretation of text as single- and/or multibyte characters.
determines the language in which messages are displayed.
If or is not specified in the environment or is null, they default to the value of
If is not specified or is null, it defaults to (see lang(5)).
If any internationalization variable contains an invalid setting, they all default to See environ(5).
International Code Set Support
Single- and multibyte character code sets are supported. with a newline character, the count will be off by one.
WARNINGS
The command counts the number of newlines to determine the line count. If a text file has a final line that is not terminated with a new-
line character, the count will be off by one.
EXAMPLES
Print the number of words and characters in
The following is printed when the above command is executed:
where words is the number of words and chars is the number of characters in
SEE ALSO standards(5).
STANDARDS CONFORMANCE wc(1)