Question about a sed command

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Question about a sed command
# 1  
Old 06-07-2011
Question about a sed command

Hi guys,

I'm currently trying to understand a piece of shell script and it has some sed commands. I've been looking through sed tutorials to figure out what it does but still no luck Smilie

Can any of you guys tell me what this particular command does?

sed -i '1i\.options' a/*


EDIT: nevermind... I figured out that it appends some stuff at the top of a file. Sorry about this folks

Last edited by chu816; 06-07-2011 at 08:57 PM..
# 2  
Old 06-07-2011
insert ".options " at first line in each file under folder a.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Sed command usage question

How to work x in sed command? I know x command is swaps the contents of pattern space and hold space. But i am unable to understand it's working? (4 Replies)
Discussion started by: Vartika18
4 Replies

2. Shell Programming and Scripting

sed and awk giving error ./ line 13: sed: command not found

Hi, I am running a script in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :- ./ line... (12 Replies)
Discussion started by: satishmallidi
12 Replies

3. Shell Programming and Scripting

sed command question

Hey all, so I've been experimenting with SED today, no experience before today, so if you're not patient, stop reading now! :P I will attempt to explain this as simply as possible, without having to post massive walls of shitty code. Basically, I've created a small sed script to go through an... (9 Replies)
Discussion started by: Parrakarry
9 Replies

4. Shell Programming and Scripting

after sed command file shows '????' question marks

Hi All, I am trying to replace a string in a oracle LDT file file extension .ldt. I am using the following command: sed "s/Test Number Viewer/Test Number 1/g" TEST_LIEN_FORM.ldt > TEST_LIEN_FORM.ldt.tmp mv TEST_LIEN_FORM.ldt.tmp TEST_LIEN_FORM.ldt But after the command, the file... (2 Replies)
Discussion started by: veena484
2 Replies

5. Shell Programming and Scripting

Sed command garbled question

for j in $(cat ${list_B}) do to_replace_2=$(grep $j ${useralias}_2) sed "s/^${j}/${to_replace_2}/p" ${entries} > ${entries}_2 mv ${entries}_2 ${entries} done Hi, I've the above sed command running in a script. Its basically looping through a file and replacing its beginning of line... (8 Replies)
Discussion started by: Jazmania
8 Replies

6. Shell Programming and Scripting

Sed command question on Solaris

Hi, I'm trying to find the first field in a text file with the below sed command but it doesn't seem to be correct for running on Solaris.. It has no problem running on AIX. Anyone got a suggestion what the problem is? sed 's/^\(\+\) /OK/' The eventual goal is to separate the columns in a... (5 Replies)
Discussion started by: Jazmania
5 Replies

7. UNIX for Dummies Questions & Answers

Question on my sed command

So I have this sed command below. The content of the tmp.txt file is dv01:at01,at05,at02:at04 sed 's/\:.*\,/\,/g' tmp.txt Which produces dv01,at02:at04 and I'm trying to use sed to get me dv01,at05,at02 Stripping out the parts leading with ":". My sed is pretty basic, can... (5 Replies)
Discussion started by: J-Man
5 Replies

8. Shell Programming and Scripting

Loop with sed command to replace line with sed command in it

Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line. ... (1 Reply)
Discussion started by: cbo0485
1 Replies

9. Shell Programming and Scripting

Sed Question 1. (Don't quite know how to use sed! Thanks)

Write a sed script to extract the year, rank, and stock for the most recent 10 years available in the file top10_mktval.csv, and output in the following format: ------------------------------ YEAR |RANK| STOCK ------------------------------ 2007 | 1 | Exxon... (1 Reply)
Discussion started by: beibeiatNY
1 Replies

10. Shell Programming and Scripting

Quick Question on sed command in shell script

Hello, I have the following line in one of my shell scripts. It works fine when the search string($SERACH_STR) exists in the logfile($ALERTLOG) but if the search string does not exist this line errors out at run time. Is there a way to make this line return 0 if it is not able to find the... (4 Replies)
Discussion started by: luft
4 Replies
Login or Register to Ask a Question