All Questions
154
questions
0
votes
1
answer
31
views
Permission denied when running a mv command as user after entering into sudoers file
I have a user which needs to move a file to a dated folder.
I have an entry into the sudoers file as follows:
backupuser ALL=(ALL) NOPASSWD: /usr/bin/mv /var/lib/pgsql/base_backup/*.tar.gz /var/lib/...
- 3
0
votes
2
answers
118
views
How to automatically source your bashrc file when you become a root user [duplicate]
At my work work we work with multiple people on several RHEL servers.
I always login to my Linux servers as my regular user (duh).
Assume I have a added extra functions/aliases to my .bashrc file. Is ...
0
votes
0
answers
36
views
pgrep returns correct results only for partial script name [duplicate]
I have a script called synchronize_dirs.sh which just wraps a call to sleep:
-bash-4.2$ cat synchronize_dirs.sh
#!/bin/bash
sleep 60
-bash-4.2$
What's confusing to me is the behavior of pgrep in the ...
- 113
0
votes
4
answers
700
views
Cron Job: Best Practices
I have written a bash script which will be setup as a cron job in the future.
During the script development I have added echo lines to help me follow and debug my code, like the code snippet below:
#!/...
- 83
2
votes
0
answers
56
views
How do I dynamically find a disk with free space to create a separate partition using bash
I would like to first state that I am new to disk partitioning, so if at any point my desired result is an impossible action to be performed on the workstation, kindly enlighten me on the proper way ...
- 21
0
votes
1
answer
110
views
When logging into a UNIX/Linux box, which profile scripts are executed?
When logging into a UNIX/Linux box, which profile scripts are executed?
Typically there are several different profile scripts that set the $PATH variable and other aspects of the user's environment. ...
0
votes
1
answer
81
views
Reasons for stty -tostop having no effect [duplicate]
I am trying to get a background process to print to the terminal. I haven't seen anything that otherwise indicates there is anything else to do besides stty -tostop. Am I missing something? Running ...
- 107
1
vote
2
answers
262
views
How to tell when sshd is ready for connections?
I use a bash script to reboot a remote server, then login via SSH to run some commands. My script works most of the time, but occasionally fails with this error:
"System is booting up. ...
- 565
0
votes
1
answer
227
views
Using '/usr/bin/cd' in a cron script fails while 'cd' works
I have a simple shell script that I am running via cron. I am using it to perform a scheduled git pull operation (yeah, I know there are probably better methods, but this is another team's repository ...
- 103
-2
votes
1
answer
42
views
linux + network scanner tool that discover Linux rhel machine
we have network lab range from 18.2.1.1 until 18.7.252.253 , and we want to capture only the Linux RHEL machines with version 7.x ( /etc/redhat-release ) , ( we have around 2870 machines and only 390 ...
- 13.4k
0
votes
0
answers
802
views
Format date to another date format in bash
I am retrieving the following dates from a database:
2022-04-12-08.22.28.940722
2018-10-30-10.28.10.112309
2022-04-07-14.13.19.426219
In my bash script I am writing them to a file (where the date is ...
- 233
0
votes
1
answer
81
views
How to loop trough wtmp and extract certain data?
I am using the following command to save wtmp (last command) to a logfile:
last -F | grep -i -e pv -e nv -e pp > last.log
Result:
I want to extract the username (first block) and the time of ...
- 233
0
votes
0
answers
82
views
Nested for loop inside an ssh -t for loop command
I've been trying to save some time by creating a loop to edit ifcfg files using the sed command. For testing I started by trying the below loop:
for k in `cat *FILE CONTAINING HOSTNAME*`; do echo $k; ...
- 1
1
vote
1
answer
164
views
secrets unintentionally printed to cloud-init logs
The two lines of bash code below pull a secret into a cloud-init script for an Azure VM running RHEL8. But each of the two lines has an unintended side effect of printing the secret into the cloud-...
- 5,269
0
votes
2
answers
187
views
Replace all character to space until it meet the first /
This is the string (it is the value of a shell variable):
2908104 /var/cache/yum/x86_64/7Server/Patches/gen
Expected output:
/var/cache/yum/x86_64/7Server/Patches/gen
How to retrieve only the value ...
- 3