All Questions
1,997
questions
0
votes
1
answer
51
views
Convert string range into array of numbers in perl and prefix with another string [duplicate]
I have a string list (i.e: 1-15) and I want to generate this
Scenario_01 ... Scenario_10 Scenario_11 ... Scenario_15
I tried this
range=1-15
echo $range | perl -pe 's/(\d+)-(\d+)/join(" ...
- 1
0
votes
1
answer
60
views
Warning "Substitution replacement not terminated", only in sourced shell script
I'm trying to remove all directories whose path matches a certain pattern from the path, within a script that would be sourced using .. The script prints a warning "Substitution replacement not ...
- 1,016
1
vote
2
answers
145
views
How do I find the oldest used files from a program that links its bins, like Homebrew? [closed]
How do I find the oldest used files from this?
MBP:~ user$ \ls -la /usr/local/bin/ | egrep -i "Cellar|Cask" | head
lrwxr-xr-x 1 user admin 37 Sep 13 12:19 2to3 -> ../Cellar/...
- 129
1
vote
4
answers
254
views
Perl one-liner: capture groups in a substitution being interpreted as octal
Assume that I have a file that contains the text foo_bar_baz, and I want to replace it with foo_bar_1234 (this is a simplified version of a more complex issue).
First try:
$ echo "foo_bar_baz&...
- 469
5
votes
5
answers
183
views
Reverse string in specific fields with condition
I have this file:
m64071_220512_054244/12584899/ccs rev pet047-10055 ACGTGCGACCTTGTGA TTGAGGGTTCAAACGTGCGACCTTGTGA
m64071_220512_054244/128321000/ccs rev pet047-10055 ACGTGCGACCTTGTGA ...
- 443
3
votes
9
answers
263
views
more efficient HH:MM:SS conversion possible?
I'm wondering please if there is a more efficient way to convert HH:MM:SS to decimal hours for the ordinate (y) axis of gnuplot, with dates on the (x) abscissa. Some of these plots have many thousands ...
- 31
7
votes
5
answers
236
views
Trying to extract a substring and version number from a filename using bash
I'm currently trying to extract a substring and version number from a filename using bash.
There are two formats the filenames will be in:
example-substring-1.1.0.tgz
example-substring-1.1.0-branch-...
- 321
-1
votes
3
answers
167
views
How to convert the perl index script to bash function
I want to use perl to get the index of from any given string and substring in bash function.
Here is the example for getting the indexOf value from perl script:
https://www.geeksforgeeks.org/perl-...
- 1,342
1
vote
4
answers
88
views
Bash script to replace content of line with information in a consequent line (sed)
I have a File.txt listing several items and additional details in consequent lines included in square brackets []:
item name1,
item name2,
item name3,
item name4,
some text
on several lines
detail ...
- 37
5
votes
7
answers
305
views
Randomize txt file in Linux but guarantee no repetition of lines
I have a file called test.txt which looks like this:
Line 1
Line 2
Line 3
Line 3
Line 3
Line 4
Line 8
I need some code which will randomize these lines BUT GUARANTEE that the same text cannot appear ...
- 115
0
votes
0
answers
835
views
why does the situation "client_loop: send disconnect: Broken pipe" occur during SSH connection in one case and does not occur in another
If I do like this (bash):
SSH_COMMAND="ssh -t ${LOGIN}@${HOST}"
sshpass -p ${PASSWD} ${SSH_COMMAND} "command"
then I get the result:
client_loop: send disconnect: Broken pipe
and (...
- 9
1
vote
1
answer
45
views
Running system command fails but the same command works executed directly in bash
I am running the following code in perl
my $exp_date = `date --date="$(openssl x509 -enddate -noout -in certificate.pem | cut -d= -f 2)" --iso-8601`;
and I get:
date: invalid date ‘100 ...
- 4,235
-1
votes
1
answer
117
views
How do I get a SECONDS variable in Perl from bash?
How do I display basic variables like SECONDS inside Perl while running command in bash?
perl -e 'system(bash -c echo $SECONDS)'
It displays nothing at all. I have no access to the bash variables, ...
- 63
2
votes
2
answers
172
views
Is it possible to call bash function from Perl? [duplicate]
admin@admin:~$ function fun1() { echo "abc"; }
admin@admin:~$ fun1
abc
I want to call this function from Perl.
admin@admin:~$ perl -e 'fun1'
admin@admin:~$
There is no output. What do I ...
- 63
-1
votes
1
answer
273
views
How to replace PS1 variable in /etc/skel/.bashrc or .bashrc file using sed, awk, or perl?
Edit - 06/08/23 - Original Question Kept Substantially the Same
Thanks to Charles Duffy for providing valuable feedback in comments. The original question occurs in the context of item 1. But based on ...
- 369