Using sed to delete everything after "space"

Login or Register for Dates, Times and to Reply

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Using sed to delete everything after "space"
# 1  
Using sed to delete everything after "space"


I have a lot of string texts which normally should only contain a single float so that I can put this float into a variable.
This stings are generated by a grep command out of a large html file.
sometimes a value that I want to grep is found more than once, so that the resulting sting contains the value more than once, too.
"14.5 14.5"
So my idea was to use the sed command to delete everything after the first found " ". But I am not able to set the parameters for that sed command right.
I hope someone can help me with that...


---------- Post updated at 01:14 PM ---------- Previous update was at 01:03 PM ----------

never mind. The Secound after I wrote my question I found the Answer myself:
sed 's/\s.$//'

Last edited by rbatte1; 01-12-2018 at 09:49 AM.. Reason: Added CODE tags
# 2  
You certainly meant .* not .$ ?
Further, \s is standard in perl (PCRE). And came into the GNU RE but is not a standard in an RE (not portable to a non-GNU sed).
The standard wants a character class
sed 's/[[:blank:]].*//'

Last but not least you ask to delete everything *after* a space, that would be
sed 's/\([[:blank:]]\).*/\1/'

The matching blank is marked in a \( \) group, and the \1 restores it.
Login or Register for Dates, Times and to Reply

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

Test Your Knowledge in Computers #249
Difficulty: Easy
Senator Albert Gore, Jr. authored the High Performance Computing and Communication Act of 1991, creating what Gore referred to as the information superhighway.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed not applying /d "delete line" option

So I'm on an AIX machine. And sed is not applying /d "delete line" option when I also include match word options \< and \> examples... echo cat | sed '/\<cat\>/d'will return cat for some reason echo cat | sed "/\<cat\>/d"will also still return cat. Of course i can just run echo cat... (9 Replies)
Discussion started by: escooter87
9 Replies

2. Shell Programming and Scripting

Delete all log files older than 10 day and whose first string of the first line is "MSH" or "<?xml"

Dear Ladies & Gents, I have a requirement to delete all the log files in /var/log/test directory that are older than 10 days and their first line begin with "MSH" or "<?xml" or "FHS". I've put together the following BASH script, but it's erroring out: for filename in $(find /var/log/test... (2 Replies)
Discussion started by: Hiroshi
2 Replies

3. Shell Programming and Scripting

Find "*.c" and "Makefile" and then delete them with one line

find "*.c" and "Makefile" and then delete them with one line (3 Replies)
Discussion started by: yanglei_fage
3 Replies

4. Shell Programming and Scripting

awk -sed help : forth . to convert to "space"

Hi Experts, Good day, I am looking for the 6th fields 4th dot (.) to convert into a space in the output. file: tcp 0 0 2900 1 ESTABLISHED tcp 0 0 2900 1 ESTABLISHED tcp 0 ... (11 Replies)
Discussion started by: rveri
11 Replies

5. Shell Programming and Scripting

how to use "cut" or "awk" or "sed" to remove a string

logs: "/home/abc/public_html/index.php" "/home/abc/public_html/index.php" "/home/xyz/public_html/index.php" "/home/xyz/public_html/index.php" "/home/xyz/public_html/index.php" how to use "cut" or "awk" or "sed" to get the following result: abc abc xyz xyz xyz (8 Replies)
Discussion started by: timmywong
8 Replies

6. Shell Programming and Scripting

Delete files older than "x" if directory size is greater than "y"

I wrote a script to delete files which are older than "x" days, if the size of the directory is greater than "y" #!/bin/bash du -hs $1 while read SIZE ENTRY do if ; then find $1 -mtime +$2 -exec rm -f {} \; echo "Files older than $2 days deleted" else echo "free Space available"... (4 Replies)
Discussion started by: JamesCarter
4 Replies

7. Shell Programming and Scripting

Unix commands delete all files starting with "X" except "X" itself. HELP!!!!?

im a new student in programming and im stuck on this question so please please HELP ME. thanks. the question is this: enter a command to delete all files that have filenames starting with labtest, except labtest itself (delete all files startign with 'labtest' followed by one or more... (2 Replies)
Discussion started by: soccerball
2 Replies

8. Shell Programming and Scripting

Sed: Delete lines in files that contain other than a-z ,0-9 and "."

Sed: Delete lines in files that contain other than 'a-z' ,'0-9', '.' and '-' Hello, I'm looking for a shell command or maybe a small php loop to delete lines in files.txt (in the same directory) that contain character other then 'a-z' ,'0-9', '.' and '-' All line that have characters like... (4 Replies)
Discussion started by: devlin
4 Replies

9. Shell Programming and Scripting

cat $como_file | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g'

hi All, cat file_name | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g' Can this be done by using sed or awk alone (4 Replies)
Discussion started by: harshakusam
4 Replies

10. Shell Programming and Scripting

Delete lines ending in "_;" using sed

I could really use some help with this issue. I'm having a lot of trouble getting my sed command to delete only the lines from my file that end with _; I'm also supposed to carry the leading 'c' down to the next line. The commands I've tried either delete everything or nothing at all. Any help... (12 Replies)
Discussion started by: turbulence
12 Replies

Featured Tech Videos