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View the SHELL type of the system

Source: Internet
Author: User
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View the system's SHELL type-general Linux technology-Linux programming and kernel information. The following is a detailed description. 1. Enter a command that is not recognized by the system (for example, # ig) to obtain the system prompt.

Aix5.3:/# ig
Ksh: ig: not found.

2. # echo $0 (applicable: sh/ksh)

Aix5.3: // # echo $0
-Ksh

3. # echo $ SHELL (the default Shell does not reflect the current shell in real time)

Aix5.3: // # echo $ SHELL
/Usr/bin/ksh

4. # ps

Aix5.3:/# ps
PID TTY TIME CMD
1843380 pts/56-ksh
2269246 pts/56 ps

It is also applicable to other UNIX/LINUX systems.

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