03-12-2012
Although I already knew that those commands listed in your second quote should not be delimited by a semicolon, it's news to me that POSIX does not require it for the others.
Thank you very much for the POSIX enlightenment, Scrutinizer.
And thanks for reporting back, ctsgnb.
Regards,
Alister
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello,
i have a listing (let say ABC) consists of the below:
:
public database link
public synonym
role
rollback segment
:
when i run the below for loop,
for i in `more ABC`
do
echo "$i"
done
it gives me,
:
public
database (4 Replies)
Discussion started by: newbie168
4 Replies
2. UNIX for Dummies Questions & Answers
Hi ,
I have a string which is of multiple line,I have to split the string by reading one line in each iteration and keep it in a string.I am keeping all the file names in side as string returned by the ls command ,I am stocked at the point of spliting the string to segragate each file.
... (4 Replies)
Discussion started by: Deekay.p
4 Replies
3. Shell Programming and Scripting
So, I want to read line-by-line a text file with unknown number of files....
So:
a=1
b=1
while ; do
b=`sed -n '$ap' test`
a=`expr $a + 1`
$here do something with b etc
done
the problem is that sed does not seem to recognise the $a, even when trying
sed -n ' $a p'
So, I cannot read... (3 Replies)
Discussion started by: hakermania
3 Replies
4. UNIX for Dummies Questions & Answers
So, the beginning of my script will cat & grep a file with the output directed to a new file. The data I have in this file needs to be parsed, read and evaluated.
Basically, I need to identify the latest date/time stamp and then calculate whether or not it is within 15 minutes of the current... (1 Reply)
Discussion started by: hynesward
1 Replies
5. Shell Programming and Scripting
I need some help. I would like to read in a text file.
Take a variable such as ROW-D-01, compare it to what's in one line in the text file such as PROD/VM/ROW-D-01 and only input PROD/VM into a variable without the /ROW-D-01.
Is this possible? any help is appreciated. (2 Replies)
Discussion started by: xChristopher
2 Replies
6. Shell Programming and Scripting
Hi,
i have a scenario were i should compare a few fields from each line then increment a variable based on that.
Example file
989878|8999|Y|0|Y|N|V
989878|8999|Y|0|N|N|V
989878|8999|Y|2344|Y|N|V
i have 3 conditions to check and increment a variable on every line
condition 1 if ( $3... (4 Replies)
Discussion started by: selvankj
4 Replies
7. Shell Programming and Scripting
Hi,
I want to read a live log file line by line and considering those line which start from time stamp;
Below code I am using, which read line but throws an exception when comparing line that does not contain error code
tail -F /logs/COMMON-ERROR.log | while read myline; do... (2 Replies)
Discussion started by: ketanraut
2 Replies
8. Shell Programming and Scripting
$ cat bashtest
#!/usr/local/bin/bash
echo <<<"EOF"
line1
line2
line3
EOF
$ ./bashtest
./bashtest: line 3: line1: command not found
./bashtest: line 4: line2: command not found
./bashtest: line 5: line3: command not found
./bashtest: line 6: EOF: command not found
What am i doing... (4 Replies)
Discussion started by: urello
4 Replies
9. UNIX for Beginners Questions & Answers
Hi All,
i want to write a shell script read below file line by line and want to exclude the lines which contains empty value for MOUNTPOINT field.
i am using centos 7 Operating system.
want to read below file.
# cat /tmp/d5
NAME="/dev/sda" TYPE="disk" SIZE="60G" OWNER="root"... (4 Replies)
Discussion started by: balu1234
4 Replies
LEARN ABOUT LINUX
shtool-echo
SHTOOL-ECHO.TMP(1) GNU Portable Shell Tool SHTOOL-ECHO.TMP(1)
NAME
shtool-echo - GNU shtool echo(1) extensional command
SYNOPSIS
shtool echo [-n|--newline] [-e|--expand] string
DESCRIPTION
shtool echo is an echo(1) style command which prints string to stdout and optionally provides special expansion constructs (terminal bold
mode, environment details, date, etc) and newline control. The trick of this command is that it provides a portable -n option and hides the
gory details needed to find out the environment details under option -e.
OPTIONS
The following command line options are available.
-n, --newline
By default, output is written to stdout followed by a "newline" (ASCII character 0x0a). If option -n is used, this newline character is
omitted.
-e, --expand
If option -e is used, string can contain special "%x" constructs which are expanded before the output is written. Currently the
following constructs are recognized:
%B switch terminal mode to bold display mode.
%b switch terminal mode back to normal display mode.
%u the current user name.
%U the current user id (numerical).
%g the current group name.
%G the current group id (numerical).
%h the current hostname (without any domain extension).
%d the current domain name.
%D the current day of the month.
%M the current month (numerical).
%m the current month name.
%Y the current year.
EXAMPLE
# shell script
shtool echo -n -e "Enter your name [%B%u%b]: "; read name
shtool echo -e "Your Email address might be %u@%h%d"
shtool echo -e "The current date is %D-%m-%Y"
HISTORY
The GNU shtool echo command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1998 for Website META Language (WML)
under the name buildinfo. It was later taken over into GNU shtool.
SEE ALSO
shtool(1), echo(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-ECHO.TMP(1)