Visit The New, Modern Unix Linux Community


help on shell script to check line


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting help on shell script to check line
# 1  
help on shell script to check line

Hi Scripting Gurus,

Can someone help to transform the below logic into a shell script, might be easy for some of you.

I have a file with below text, I need if the line has the ":" and the above to it is not a blank line should print " <text>: is incorrect format"

Apple:
vitamin = A
Banana:
vitamin = A

Orange:
vitamin = C

So, If I run the script on above file, it should say Banana: is not a correct format
# 2  
Please ignore this post.. Posted in the wrong thread.
# 3  
Please post whatever u have tried so far and we can help you out further
# 4  
Code:
#  nawk '$0~":"&&t!=""{print $0" is incorrect format"}{t=$0}' infile
Banana: is incorrect format

HTH

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #567
Difficulty: Medium
The ternary if-then-else operator generally has the following syntax: E ? X : Y where E is a Boolean expression and if true, the statement is assigned the value Y.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Shell script to check line end not ending with comma

I have several line in a text file. for example I like apple; I like apple I like orange; Output: I like apple I try to useif grep -q "!\;$"; then (Not work) Please use CODE tags when displaying sample input, sample output, and code segments (as required by forum rules). (1 Reply)
Discussion started by: cmdcmd
1 Replies

2. Shell Programming and Scripting

How to check line existence in shell ?

Hi, We have some config file and there we are looking to append a line if it is not found. abc.conf authpriv.* /var/log/secure mail.* -/var/log/maillog *.debug @vxhgt-hskhng02 cron.* ... (12 Replies)
Discussion started by: Litu19
12 Replies

3. Shell Programming and Scripting

Bash shell script to check if script itself is running

hi guys we've had nagios spewing false alarm (for the umpteenth time) and finally the customer had enough so they're starting to question nagios. we had the check interval increased from 5 minutes to 2 minutes, but that's just temporary solution. I'm thinking of implementing a script on the... (8 Replies)
Discussion started by: hedkandi
8 Replies

4. Shell Programming and Scripting

shell script to check blank line?

Can someone help to transform the below logic into a shell script, might be easy for some of you. I have a file with below text, I need if the line has the ":" and the above to it is not a blank line should print " <text>: is incorrect format" Apple: vitamin = A... (0 Replies)
Discussion started by: usyseng
0 Replies

5. Shell Programming and Scripting

get the fifth line of a text file into a shell script and trim the line to extract a WORD

FOLKS , i have a text file that is generated automatically of an another korn shell script, i want to bring in the fifth line of the text file in to my korn shell script and look for a particular word in the line . Can you all share some thoughts on this one. thanks... Venu (3 Replies)
Discussion started by: venu
3 Replies

6. Shell Programming and Scripting

perl script to check if empty files are created and delete them and run a shell script

I have a local linux machine in which the files are dumped by a remote ubuntu server. If the process in remote server has any problem then empty files are created in local machine. Is there any way using perl script to check if the empty files are being created and delete them and then run a shell... (2 Replies)
Discussion started by: hussa1n
2 Replies

7. Shell Programming and Scripting

how to check which line of the script is showing the error

how to check which line of the script is showing the error... like -x will print each output in stdout... but want to know exact error line trowing error.. (2 Replies)
Discussion started by: mail2sant
2 Replies

8. Shell Programming and Scripting

IP check with shell script

hi guys ..newbie here i would like to create a simple script tat will detect wether the machine has IP or not ... but it seems that my script doesnt really work it kept rebooting... i set this script during boot so that it will check else it will reboot it a shell script thou... ... (5 Replies)
Discussion started by: bladez
5 Replies

9. Shell Programming and Scripting

check my first shell script

I have written the below script to determine whether a string is palindrome or not ? But its not working, any help to debug it ? I am new to this forum but when I searched for my question, I found that many people refused to answer this question thinking that its Homework question, Therefore I... (2 Replies)
Discussion started by: gridview
2 Replies

10. Shell Programming and Scripting

check in unix shell script so that no one is able to run the script manually

I want to create an automated script which is called by another maually executed script. The condition is that the no one should be able to manually execute the automated script. The automated script can be on the same machine or it can be on a remote machine. Can any one suggest a check in the... (1 Reply)
Discussion started by: adi_bang76
1 Replies

Featured Tech Videos