I think that this might give you lines that are 20 OR 21 characters long, but I'm not certain. A quick test should prove that to you. How does your code run for you with this as the input:-
Usually the ! will negate a search, so sed -n "!/Hello world/p" might print the unmatched lines. Does that help?
As an alternate, grep can use a regular expression, so grep -E '^.{21}$' a.a would match a 21 character line and grep -Ev '^.{21}$' a.a should match the others
Given the behaviour of type, can I assume that this is an emulation rather than a Unix/Linux server?
I hope that this helps, but please show the output/errors and we can dig in further if I've got it wrong.
Kind regards,
Robin
Last edited by rbatte1; 05-16-2018 at 01:35 PM..
Reason: Added grep option
Hi All,
I want to find a specific pattern from approximately 400000 files on solaris platform. Its very heavy for me to grep that pattern to each file individually.
Can anybody suggest me some way to search for specific pattern (alpha numeric) from these forty thousand files. Please note that... (6 Replies)
Hi,
I have a challenging task,in which i have to find the duplicate files by its name and size,then i need to take anyone of the file.Then i need to open the file and find for more than one pattern and count of that pattern.
Note:These are the samples of two files,but i can have more... (2 Replies)
Hi All,
I've got a ton of files in a particular directory. I want to find pdf files older than 30 days in that directory and then the cumulative size of those files.
Ex:
find /home/jk/a -name "*.pdf" -mtime +30
consider it finds the below 4 files.
/home/jk/a/1.pdf
/home/jk/a/2.pdf... (1 Reply)
before i get to it, i would like to say this is the greatest unix site ive ever seen, and im glad to see so many people are out there to help. thanks
well, im trying to make myself a script where i can specify a directory and a file size so that my script will show me any files larger than the... (5 Replies)
Hi friends,
This is sed & awk type question.
I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example
###start of input text file ####
abc
def
ghi
1
2
3
4
kjld
random... (3 Replies)
Hi All,
I am trying to find 4 latest files inside one folder having following File Name pattern and store them into 4 different variables and then use for processing in my shell script. File name is fixed length.
1) Each file starts with = ABCJmdmfbsjop letters + 7 Digit Number... (6 Replies)
I am running a UNIX script to get unused files and their sizes from the server. The issue is arising due to the spaces present in the filename/folder names.Due to this the du -k command doesn't work properly.But I need to calculate the size of all files including the ones which have spaces in them.... (4 Replies)
Data file example
I look for primary and * to isolate the interesting slot number.
slot=`sed '/^primary$/,/\*/!d' filename | tail -1 | sed s'/*//' | awk '{print $1" "$2}'`
Now I want to get the Touch line for only the associate slot number, in this case, because the asterisk... (2 Replies)
Hi,
I am using AIX and one of my file systems is getting filled up and I need to track with files are occupying more volume.
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/nhdb_lv 2110.00 63.80 97% 76525 1% /nhdb
under the Mount Point /nhdb... (1 Reply)
Hi, I need to print lines which are matching with start pattern "SELECT" and END PATTERN ";" and only select the last "select" statement including the ";" .
I have attached sample input file and the desired input should be as:
INPUT FORMAT:
SELECT
ABCD,
DEFGH,
DFGHJ,
JKLMN,
AXCVB,... (5 Replies)
Discussion started by: nani2019
5 Replies
LEARN ABOUT LINUX
shtool-subst
SHTOOL-SUBST.TMP(1) GNU Portable Shell Tool SHTOOL-SUBST.TMP(1)NAME
shtool-subst - GNU shtool sed(1) substitution operations
SYNOPSIS
shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
[-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]
DESCRIPTION
This command applies one or more sed(1) substitution operations to stdin or any number of files.
OPTIONS
The following command line options are available.
-v, --verbose
Display some processing information.
-t, --trace
Enable the output of the essential shell commands which are executed.
-n, --nop
No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.
-w, --warning
Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
operations resulted in no content change on all files.
-q, --quiet
Suppress warning on substitution operation resulting in no content change.
-s, --stealth
Stealth operation. Preserve timestamp on file.
-i, --interactive
Enter interactive mode where the user has to approve each operation.
-b, --backup ext
Preserve backup of original file using file name extension ext. Default is to overwrite the original file.
-e, --exec cmd
Specify sed(1) command directly.
-f, --file cmd-file
Read sed(1) command from file.
EXAMPLE
# shell script
shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]
# RPM spec-file
%install
shtool subst -v -n
-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g'
-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g'
`find . -name Makefile -print`
make install
HISTORY
The GNU shtool subst command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 2001 for GNU shtool. It was prompted
by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.
SEE ALSO shtool(1), sed(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-SUBST.TMP(1)