Command output string manipulation possible in one line?

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Command output string manipulation possible in one line?
# 1  
Old 08-05-2011
Command output string manipulation possible in one line?

This has been bothering me for 3 days.

$> hostname

And I just want "cepsun",

I would normally do h=`hostname`; ${h%%64*}

But I am looking for a one-liner just for my own knowledge, because if there is a way to do this, I should know it by now.

Anyway, so is this possible?

P.S. I realize there are other ways to do this without using ${%%}, but I have ran into this problem like 4 times within the past few days where it would be really convenient and clean to just use ${VAR%%PATTERN}.

# 2  
Old 08-06-2011
$ echo "cepsun64amd" | cut -c 1-6

---------- Post updated at 07:44 AM ---------- Previous update was at 07:43 AM ----------

$ echo "cepsun64amd" | sed 's/sun.*/sun/'

# 3  
Old 08-06-2011
I take that as "no."
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to read the output of a command line by line and pass it as a variable?

Hi, I have some 2000 names in a table like below. Java Oracle/SQL ANSI SQL SQL,DWH,DB DB&Java And by using for loop in my code i am able to get a single word but if there is any special character or space then it is considering as a next line. I have to execute the below queries in... (10 Replies)
Discussion started by: Samah
10 Replies

2. Shell Programming and Scripting

sed command to replace a line in a file using line number from the output of a pipe.

Sed command to replace a line in a file using line number from the output of a pipe. Is it possible to replace a whole line piped from someother command into a file at paritcular line... here is some basic execution flow.. the line number is 412 lineNo=412 Now i have a line... (1 Reply)
Discussion started by: vivek d r
1 Replies

3. Shell Programming and Scripting

Manipulation of file/folder with output of command

I like organising some of my folders in the format of yyyymmdd to keep them in chronological order. For example, today which is 5th July 2014, I made a folder named 20140705. I want to manipulate these folders from a shell script, but I cannot find out how to do it without typing the literal name... (5 Replies)
Discussion started by: Gen12345
5 Replies

4. Shell Programming and Scripting

Want to terminate command execution when string found in the command output

Hi Experts, I am very much new to linux scripting, I am currently working on reducing my manual work and hence writing a script to automate few task. I am running below command to snmpwalk the router.. snmpwalk -v 3 -u WANDL_SU -a MD5 -A vfipmpls -x DES -X VfIpMpLs -l authPriv... (19 Replies)
Discussion started by: Hanumant.madane
19 Replies

5. Shell Programming and Scripting

Bash - Loading a command's output line by line into an array

I have been trying this a lot of different ways and haven't found too much online. Here's what I've got so far: j=0 declare -a first zero=(`cat $tmpfile`) for i in "${zero}" do command $i >> "${first}" ... (4 Replies)
Discussion started by: Azrael
4 Replies

6. Shell Programming and Scripting

grep only a string on command output

How can I grep exactly a string that has .,/ characters using grep? Example: I want to grep ONLY string1 and not string1.more or string1.more.evenmore #lsauth ALL|grep 'string1' All output: string1 <--- This is the only I want. string1.more string1.evenmore. more.string1... (4 Replies)
Discussion started by: iga3725
4 Replies

7. Shell Programming and Scripting

Remove a specific line from grep output string

Dear All I want to search string "1000" from input file and if it found i want remove line that contain 1000 and also remove 3 line above it and 2 line below it. INPUT FILE: BHAT-D 2 aaa ID CODE GS UPDATE MODE LANG MCO MCL NUMPAGES 50 ... (7 Replies)
Discussion started by: jaydeep_sadaria
7 Replies

8. Shell Programming and Scripting

reading ps command's output line by line

hi; as a pseudo; while read psLine do myFunc $psLine done < ps i don't want to redirect ps command's to a file. in fact, my problem is "how can i read stdout line by line in bash, sed, awk or any?" thanks, (5 Replies)
Discussion started by: s. murat
5 Replies

9. Shell Programming and Scripting

how to? launch command with string of command line options

my description from another thread... here's my code: #!/bin/bash IFS=$'\n' function OutputName() { input=$1 echo $input input=`echo "$input" | sed -e 's/.//'` input=`echo "$input".avi` output_name=$input } if ]; then echo... (5 Replies)
Discussion started by: TinCanFury
5 Replies
Login or Register to Ask a Question

Featured Tech Videos