All Questions
Tagged with perl shell-script
131
questions
2
votes
3
answers
821
views
ARGV[] not accepting the argument
I have a shell script that I am trying to pass a date argument to ARGV[1] but the script is giving a blank output
Here is the command:
#!/bin/bash
dt=$(date -d "yesterday" '+%m%d%Y')
cat /...
- 73
-1
votes
3
answers
152
views
Replace new lines at end for those lines whose 2nd field in colon separated file span over to multiple line
I have got multiple files with different set of contents but the pattern is same across mulitple lines in different files.
sample input file : cat -n test.txt
1 adjfkhjdhfkjd: ...
2
votes
0
answers
100
views
Processing large blocklists with GNU Parallel
This is an ongoing project that has undergone a major update to speed up list processing. Here is the homepage for anyone interested!
It processes lists defined in lists.json by transforming the list ...
- 213
3
votes
1
answer
274
views
Different encoding/Unicode interpretation using terminal vs using shell script
I was working on a keymap script (map keys from one language keyboard layout to another). And after a lot of hard time trying to get everything working I found out that different characters are ...
- 141
5
votes
5
answers
780
views
How can I replace multiple substrings from multiple lines in a file matching a pattern from a different file?
I have a file that contains multiple IP addresses and hostnames, and another file that contains some folders with many IP addresses per line.
ip_hostname.txt
host1 10.1.1.1
host2 10.2.2.2
host3 10.3.3....
- 51
-2
votes
1
answer
89
views
Organising column and items based on corresponding value from different column
I have a large input.csv file that has 2 columns: Category (column A) and Item (column B), each Item having that specific Category found on column A and one row higher than the group itself; ex: rows ...
- 45
1
vote
4
answers
846
views
comment the specific line in fstab file that contained the relevant UUID number
We want to comment the specific line in fstab file that contained the relevant UUID number
Example:
Disk=sde
UUID_STRING=` blkid | grep $Disk | awk '{print $2}' `
echo $UUID_STRING
UUID="...
- 13.4k
3
votes
2
answers
1k
views
Find a pattern (of a child tag) and replace the entire parent tag at XML files, without using sed tool [duplicate]
Is there a way to find a pattern (of a child tag)
and replace the entire parent tag, using regular expressions?
I'm working from a Linux server without a graphics environment.
I have XML like:
<?...
- 33
-1
votes
1
answer
1k
views
sh + how to send cntrl c and then enter yes to accept license
I need to enter CNTRL C and then I need to enter yes , in order to accept license
now I am thinking how to automate this process
can we automate this process as run the sh script and entering CNTRL C ...
- 13.4k
-1
votes
3
answers
970
views
perl - how to convert hh:mm:ss to seconds
Is there a way in perl to convert a duration (hh:mm:ss) to total number of seconds?
sample: 02:50:30
output: 10230
- 11
0
votes
1
answer
826
views
Capturing hostname & data when executing local script on remote server
While trying to execute a local script on remotely host unable to get hostname of the remoteserver to a local output file.
For example I am executing a script below.
ssh remotehost sh -s < sudo su -...
- 3,170
1
vote
1
answer
200
views
/home/biol/perl5: Is a directory
the below script crashed:
#!/bin/bash
#usage: sh oxford_pbs.sh ref.fa AA.fasta hybrid.gff3
cov=50
ide=100
for ((i=70;i<=${ide};i++));
do
input=$(basename $(echo ${2} | sed 's|.gff3||g'))
#...
- 913
-1
votes
3
answers
1k
views
Perl script from Ubuntu doesn't run on Debian
I have a Perl script which I created on Ubuntu 20.04 LTS. It's okay and works. I took this script on another machine with Debian on it. It doesn't run with:
./my_script.pl
This gave me: ./my_script....
- 7
3
votes
5
answers
3k
views
How to achieve an early exit from a code block in a bash script (analogous to perl's `last` directive)?
One feature of Perl that I really like is its generalization of looping control keywords to any curly-brace-delimited lexical block1.
For example, one can use Perl's last directive to exit any such ...
- 15.6k
0
votes
4
answers
280
views
how to capture parameter and value from line
we want to capture only the parameter - segment.bytes and his value
example
echo "$info" | grep "segment.bytes"
{"version":1,"config":{"segment.bytes":...
- 13.4k