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  1. #!/bin/bash
  2. s="cat /etc/fstab
  3. /dev/mapper/vg00-root   /                       xfs     defaults        0 0
  4. UUID=6fc6605f-796e-4e0b-a8f7-8b339c46b1a9 /boot                   xfs     defaults        0 0
  5. /dev/mapper/vg00-tmp    /tmp                    xfs     defaults        0 0
  6. /dev/mapper/vg00-var    /var                    xfs     defaults        0 0
  7. /dev/mapper/vg00-crash  /var/crash              xfs     defaults        0 0
  8. /dev/mapper/vg00-log    /var/log                xfs     defaults        0 0
  9. /dev/mapper/vg00-swap   swap                    swap    defaults        0 0"
  10.  
  11. sed '/\/boot/{s,UUID,/dev/sda1,}'  <<< "$s"
Success #stdin #stdout 0s 4540KB
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stdin
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Standard input is empty
stdout
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cat /etc/fstab
/dev/mapper/vg00-root   /                       xfs     defaults        0 0
/dev/sda1=6fc6605f-796e-4e0b-a8f7-8b339c46b1a9 /boot                   xfs     defaults        0 0
/dev/mapper/vg00-tmp    /tmp                    xfs     defaults        0 0
/dev/mapper/vg00-var    /var                    xfs     defaults        0 0
/dev/mapper/vg00-crash  /var/crash              xfs     defaults        0 0
/dev/mapper/vg00-log    /var/log                xfs     defaults        0 0
/dev/mapper/vg00-swap   swap                    swap    defaults        0 0
https://ideone.com/oMmtUb
language:
Bash (bash 5.0.3)
created:
6 years ago
visibility:
public

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