I am cating a file with passwords into another file. I want to replace the the password with **** and it is not working. Here is my command
cat testing | sed 's/`echo ${pass}`/*****/'>>out1
${pass} is the password that I want to replace before it goes into out1
Anyone know what I am... (1 Reply)
Forgive me if this is a dumb question...I'm a Windows sys admin with little programming knowledge.
I have files containing anywhere from 3 to 200 lines. Using SED, I want to extract only lines containing a specific instance of "ISS." It is possible that "ISS" will occur several times in a... (10 Replies)
Hi! I'm trying to find a way to extract a certain amount of lines from a log file. This would allow me to "follow" a web user through our log files.
Here is a sample fake log file to explain what i want to accomplish :
BEGIN REQUEST sessionID=123456
boatload of lines for thread-1 detailing... (8 Replies)
Hi there,
My samba configuration file looks like that :
...
...
path = /home/samba/profiles/
...
path = /home/samba/shares/family
valid users = family
path = /home/samba/shares/admins
valid users = admins
path = /home/samba/shares/publicI want to extract the list of standard... (3 Replies)
Hi All,
I need to extract 543 from the command below :
# pvscan
PV /dev/sdb1 VG vg0 lvm2
Total: 1 543.88 GB] / in use: 1 / in no VG: 0
I have the following command which does the job, but I think this could be achieved in a more simple way using sed or awk. Any help is... (7 Replies)
Hi,
Could anyone clearly explain me the below sed construct in detail to get to know what it actually does?
sed 's/\(* *\)//4'
echo 'test;10;20' | sed 's/*;\(*\)/\1/' (1 Reply)
Hi,
I have a file like this-
aa
12
23
34
aa
21
34
56
aa
78
45
56
I want to print out only the lines after the last aa. How do I do this? I tried using grep -A and sed -n, but both didnt work as I wanted to.
Could someone help me out please.. (3 Replies)
Hi everyone!
I'm writting a function in .bashrc to extract some text from a file. The file looks like this:
" random text
Begin CG step 1
random text
Begin CG step 2
...
Begin CG step 100
random text"
For a given number, let's say 70, I want all the text between "Begin CG... (4 Replies)
Hi
i am reading a tutorial on sed
below command was given in tutorial. i am not able to understand the working of below command also this command is now working in my enviroment.
$ sed -n '1~2p' alarm
sed: 1: "1~2p": invalid command code ~
$
need your assitance here (7 Replies)
Discussion started by: scriptor
7 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)
07-07-2015
