User John Smith - Unix & Linux Stack Exchange

6 votes

1 answer

1k views

What is the minimum amount of memory required for starting a process on a Linux-based system?

asked Jun 30, 2022 at 10:50

6 votes

3 answers

588 views

How do I whitelist drives / partitions that can be mounted to only those that have entries in /etc/fstab?

asked Jan 8 at 7:55

4 votes

2 answers

1k views

Can it possibly work if I assign two shells to SHELL in cron?

asked Jul 10, 2021 at 17:31

4 votes

2 answers

1k views

How do I reliably capture the output of `ls` in this script?

asked Aug 22, 2023 at 8:20

3 votes

4 answers

2k views

How do I select an array to loop through from an array of arrays?

asked Aug 28, 2023 at 9:10

3 votes

1 answer

2k views

Why does escaping double quotes from Python's run (with shell=True) is different than in Bash?

asked Feb 22, 2023 at 10:36

3 votes

2 answers

408 views

How might one except hidden '.' files and directories from a script that renames them?

asked Sep 11, 2020 at 8:41

3 votes

1 answer

3k views

Could setting the permission on these files to 600 render my OS unusable? .bash_logout, .bashrc, .profile

asked Dec 7, 2021 at 11:35

3 votes

1 answer

912 views

Why is it so that when tar is executed from the script I get "command not found", (it runs without giving me such output from the terminal)?

asked Jan 12, 2022 at 18:16

3 votes

2 answers

112 views

How do I verify ssl / tls connection with openssl non-interactively (from a script)?

asked Feb 16 at 16:14

2 votes

1 answer

45 views

Why does setting `umask` to `0077` (and then downloading public key) makes a gpg public key unavailable for apt?

asked Jun 9 at 13:06

2 votes

3 answers

914 views

app.asar --nod ? What programme is it (in my netstat statistics?

asked Apr 11, 2019 at 10:07

2 votes

1 answer

238 views

Why doesn't this script succeed from crontab as it does when manually run?

asked Feb 26, 2023 at 15:11

2 votes

0 answers

314 views

Why is it possible to run files with permissions 600 from Python's subprocess.run()? [closed]

asked Jan 9, 2023 at 12:15

1 vote

0 answers

76 views

Why doesn't doas wget -qO- archive.tar.gz|doas tar -xz work as with sudo?

asked Feb 16, 2023 at 12:18

1 vote

1 answer

148 views

Is 'cmd1 [newline] cmd2' as concurrent as 'cmd1 & cmd2' in a Bash script?

asked Feb 28, 2022 at 5:36

1 vote

2 answers

1k views

How might I execute this nested for loop in parallel?

asked May 27, 2022 at 11:50

1 vote

1 answer

251 views

Why is this script treating the files with the same names as the same files?

asked Oct 12, 2023 at 8:18

1 vote

5 answers

126 views

How might I swap the remaining parts of lines (with the exception of first characters) with sed?

asked Oct 29, 2023 at 10:20

1 vote

1 answer

1k views

Using cgroups and nice with respect to the same process - does the order matter? What is the correct syntax?

asked Sep 21, 2020 at 9:53

1 vote

2 answers

120 views

How do I use a nonstandard file descriptor for reading a file into an array with mapfile?

asked Jan 1 at 13:33

0 votes

1 answer

97 views

Having downloaded keyring and imported public key, why is the public key still unavailable for apt?

asked Jan 27 at 13:00

0 votes

1 answer

52 views

Cannot automate with cron the changing of the configuration with dconf on Debian (it worked on Ubuntu)?

asked Feb 8 at 20:03

0 votes

1 answer

60 views

How do I get all MAC addresses of all devices on my LAN that have an IP address (equivalent of doas nmap -sn but for IPv6)?

asked Nov 26, 2023 at 12:29

0 votes

1 answer

78 views

SSH's -t option - how do I remotely execute a complex command that includes pipes and variable expansion?

asked Dec 8, 2023 at 20:38

0 votes

2 answers

74 views

How do I declare and use a variable in crontab that will hold the name of the admin user account?

asked Dec 9, 2023 at 11:26

0 votes

1 answer

49 views

Why isn't this command from this script run by the user specified by doas -u when this script is copied and run by an ansible playbook?

asked Dec 11, 2023 at 20:43

0 votes

1 answer

59 views

Why do I get different browser behaviour when attempting to reach bitcoin.stackexchange.com and the alias of its IP in /etc/hosts?

asked Feb 18 at 10:35

0 votes

2 answers

720 views

How might I diagnose whether I have a working ethernet interface?

asked Dec 13, 2021 at 14:54

0 votes

0 answers

375 views

Why this script doesn't work from cron while it works when invoke from my shell?

asked Aug 1, 2021 at 13:52

Stack Exchange Network

53 Questions

What is the minimum amount of memory required for starting a process on a Linux-based system?

How do I whitelist drives / partitions that can be mounted to only those that have entries in /etc/fstab?

Can it possibly work if I assign two shells to SHELL in cron?

How do I reliably capture the output of `ls` in this script?

How do I select an array to loop through from an array of arrays?

Why does escaping double quotes from Python's run (with shell=True) is different than in Bash?

How might one except hidden '.' files and directories from a script that renames them?

Could setting the permission on these files to 600 render my OS unusable? .bash_logout, .bashrc, .profile

Why is it so that when tar is executed from the script I get "command not found", (it runs without giving me such output from the terminal)?

How do I verify ssl / tls connection with openssl non-interactively (from a script)?

Why does setting `umask` to `0077` (and then downloading public key) makes a gpg public key unavailable for apt?

app.asar --nod ? What programme is it (in my netstat statistics?

Why doesn't this script succeed from crontab as it does when manually run?

Why is it possible to run files with permissions 600 from Python's subprocess.run()? [closed]

Why doesn't doas wget -qO- archive.tar.gz|doas tar -xz work as with sudo?

Is 'cmd1 [newline] cmd2' as concurrent as 'cmd1 & cmd2' in a Bash script?

How might I execute this nested for loop in parallel?

Why is this script treating the files with the same names as the same files?

How might I swap the remaining parts of lines (with the exception of first characters) with sed?

Using cgroups and nice with respect to the same process - does the order matter? What is the correct syntax?

How do I use a nonstandard file descriptor for reading a file into an array with mapfile?

Having downloaded keyring and imported public key, why is the public key still unavailable for apt?

Cannot automate with cron the changing of the configuration with dconf on Debian (it worked on Ubuntu)?

How do I get all MAC addresses of all devices on my LAN that have an IP address (equivalent of doas nmap -sn but for IPv6)?

SSH's -t option - how do I remotely execute a complex command that includes pipes and variable expansion?

How do I declare and use a variable in crontab that will hold the name of the admin user account?

Why isn't this command from this script run by the user specified by doas -u when this script is copied and run by an ansible playbook?

Why do I get different browser behaviour when attempting to reach bitcoin.stackexchange.com and the alias of its IP in /etc/hosts?

How might I diagnose whether I have a working ethernet interface?

Why this script doesn't work from cron while it works when invoke from my shell?