10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have the logic below to look up for matches within the columns between the two files with awk.
In the if statement is where the string comparison is attempted with ==
The issue seems to be with the operands, as
1. when " '${SECTOR}' " -- double quote followed by single quote -- awk matches... (1 Reply)
Discussion started by: deadyetagain
1 Replies
2. Shell Programming and Scripting
Why does this cause an infinite loop?
#!/bin/bash
while ]; do
echo "$(ipcs | awk '{print $2}')"
done
echo
exit 0
I have verified I eventually get Semaphore so it should break out of the while loop.
$ echo $(ipcs | awk '{print $2}')
Shared shmid 262145 294914... (6 Replies)
Discussion started by: cokedude
6 Replies
3. Shell Programming and Scripting
I need following code in linux bash:
Step 1:
run a command and create file1
run a command and create file2
compare file1 and 2
if any difference go to step 1 (keep trying 4 times, if no success, abort program)
else do nothing and continue program.
now I'm... (2 Replies)
Discussion started by: kashif.live
2 Replies
4. Homework & Coursework Questions
attempting the hangman program. This was an optional assignment from the professor. I have completed the logical coding, debugging now.
##I have an array $wordString that initializes to a string of dashes
##reflecting the number of letters in $theWord
##every time the user enters a (valid)... (5 Replies)
Discussion started by: lotsofideas
5 Replies
5. Shell Programming and Scripting
continuing from my previous post, whose link is given below as a reference
https://www.unix.com/shell-programming-scripting/171076-shell-scripting.html#post302573569
consider there is create table commands in a file for eg:
CREATE TABLE `Blahblahblah` (
`id` int(11) NOT NULL... (2 Replies)
Discussion started by: vivek d r
2 Replies
6. Shell Programming and Scripting
#!/bin/sh
PRINTF=/usr/bin/printf
MACHINE_NAME=`uname -n`
TIME=`date +"%H"`
$PRINTF "Welcome to $MACHINE_NAME. What is your name?\n"
read NAME
if ; then
$PRINTF "Good morning $NAME, how are you?\n"
elif ; then
$PRINTF "Good afternoon $NAME, how are you?\n"
else
$PRINTF "Good... (2 Replies)
Discussion started by: ikeQ
2 Replies
7. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
I have standard web server log file. It contains different columns (like IP address, request result code, request type etc) including a date column with the format .
I have developed a log analysis command line utility that displays... (1 Reply)
Discussion started by: TariqYousaf
1 Replies
8. Shell Programming and Scripting
Hi
I have this simple script:
#!/bin/bash
date1=2009:07:15:12:36
date2=2009:07:15:12:16
echo $date1
echo $date2
datediff=
#datediff=date1-date2
echo datediff is$datediff
How do i return the difference in seconds? (6 Replies)
Discussion started by: carp.dk
6 Replies
9. Shell Programming and Scripting
I want to remove a line that has empty string at second field when I use cut with delimeter , like below
$cat demo
hello, mum
hello,
#!/bin/sh
while read line
do
if
then
# remove the current line command goes here
fi
done < "demo"
i got an error message for above... (4 Replies)
Discussion started by: bonosungho
4 Replies
10. Shell Programming and Scripting
The script will read a bunch of names, and test if it contains "John", but as below apparently ~ does not work, so what is the easiest way to perform string comparison in bash shell script? thanks
...
elif
then
echo "get John"
.... (2 Replies)
Discussion started by: fedora
2 Replies