This may just be a lack of experience talking, but I always assumed that when possible it was better to use a commands built in abilities rather than to pipe to a bunch of commands. I wrote a (very simple) script a while back that was meant to pull out a certain error code, and report back what... (4 Replies)
Hi ,
I would like to assign command (with pipe) output to a variable. The code is as follows. The goal of the code is to get the last folder folder with a particular name pattern.
myDate=`ls | grep 2009 | tail -1`
echo "myDate=" $myDate
However, in the presence of the pipe, the code... (3 Replies)
Hey all,
I've tried this for quite some time now and haven't figured it out... I was hoping one of you shell scripters could help a newbie out :)
I am trying to take the 1st parameter of my script and use it as the search pattern for my for loop
#!/usr/bin/sh
set -vx
REGEX=$1
... (3 Replies)
Hi,
I am trying to run this command:
ED_CMD="$Access_OPS $ED_Logs_Dir/access | $lgrep -v $Access_Err"
$lgrep $ED_CMD
However, i am getting an error "Failed to open |: Broken pipe at "
My question is how to put a pipe within a variable.
Thanks. John. (4 Replies)
Hi all,
Hope someone can help me out here.
I have this BASH script (see below)
My problem lies with the variable path.
The output of the command find will give me several fields. The 9th field is the path. I want to captured that and the I want to filter this to a specific level.
The... (6 Replies)
<tr><th align=right valign=top>Faulty_Part</th><td align=left valign=top>readhat version 6.0</td></tr> <tr><th align=right valign=top>Submit_Date</th><td align=left valign=top>2011-04-28 02:08:02</td></tr> .......(a long string)
I want to get all the field between "left valign=top>" and "... (2 Replies)
Hey fellas,
I wrote an script which its output is like this:
a 1 T
a 1 T
a 2 A
b 5 G
b 5 G
b 5 G
I wanna print $1 $2 and the total number of $2 value as the third column and after that $3. Sth like this:
a 1 2 T
a 2 1 A
b 5 3 G
I know how to do it with a given input... (4 Replies)
Hello all,
quick question:
is it possible to pass input into AWK BOTH with a pipe AND a file at the same time, something like this:
command .......|awk '.................' FILEIN > fileout
All I read says either one or the other, not both, is it at all possible?
And how would the... (2 Replies)
In the below awk to add a sort by smallest to largest should it be added after the END? Thank you :).
BEGIN {
FS="*"
}
# Read search terms from file1 into 's'
FNR==NR {
s
next
}
{
# Check if $5 matches one of the search terms
for(i in s) {
if($5 ~ i) {
... (4 Replies)
Dear UNIX forum members,
I am using macbook pro 13 (2015 edition) with MAC OS Mojave and am trying to write the shell script where when it is run through terminal it asks for an input (in the code below an input variable is domains) and then that input becomes capital letter or letters which... (3 Replies)
Discussion started by: Aurimas
3 Replies
LEARN ABOUT SUNOS
echo
echo(1B) SunOS/BSD Compatibility Package Commands echo(1B)NAME
echo - echo arguments to standard output
SYNOPSIS
/usr/ucb/echo [-n] [argument]
DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.
echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
ronment variables.
For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:
o echo your current-working-directory's full pathname
o pipe the output through tr to translate the path's embedded slash-characters into space-characters
o pipe that output through wc -w for a count of the names in your path.
example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"
See tr(1) and wc(1) for their functionality.
The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if
the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's
echo() also understands a as the audible bell character; however, these commands do not have an -n option.
OPTIONS -n Do not add the NEWLINE to the output.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases.
SunOS 5.10 3 Aug 1994 echo(1B)
08-31-2011
